<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a015f3-aacc-7a12-ba1a-899edf16354b,g:418f2923-19d1-4f5b-a55b-cc95d843cf59-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY" xlink:type="simple" xlink:href="xray-20260930.xsd#CONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/CONSOLIDATEDSTATEMENTSOFCHANGESINEQUITY" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_01a015f3-ad19-7b6b-bdb9-b05fdbe0d947" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a015f3-ad19-7808-80ca-8c0d99f97182" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a015f3-ad19-7b6b-bdb9-b05fdbe0d947" xlink:to="loc_us-gaap_StatementTable_01a015f3-ad19-7808-80ca-8c0d99f97182" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ad19-79be-a027-6140c6d32c5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a015f3-ad19-7808-80ca-8c0d99f97182" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ad19-79be-a027-6140c6d32c5d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a015f3-ad19-79be-a027-6140c6d32c5d_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ad19-79be-a027-6140c6d32c5d" xlink:to="loc_us-gaap_EquityComponentDomain_01a015f3-ad19-79be-a027-6140c6d32c5d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a015f3-ad19-738c-884d-3fee2832a9af" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ad19-79be-a027-6140c6d32c5d" xlink:to="loc_us-gaap_EquityComponentDomain_01a015f3-ad19-738c-884d-3fee2832a9af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParentMember_01a015f3-ad19-7a3a-811b-73bdf52585d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a015f3-ad19-738c-884d-3fee2832a9af" xlink:to="loc_us-gaap_ParentMember_01a015f3-ad19-7a3a-811b-73bdf52585d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a015f3-ad19-770a-bc9a-24ea0ba63472" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a015f3-ad19-7a3a-811b-73bdf52585d7" xlink:to="loc_us-gaap_CommonStockMember_01a015f3-ad19-770a-bc9a-24ea0ba63472" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_01a015f3-ad19-7695-8cb7-64f457714009" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a015f3-ad19-7a3a-811b-73bdf52585d7" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_01a015f3-ad19-7695-8cb7-64f457714009" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_01a015f3-ad19-75e4-b523-fa44f3a68d25" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a015f3-ad19-7a3a-811b-73bdf52585d7" xlink:to="loc_us-gaap_RetainedEarningsMember_01a015f3-ad19-75e4-b523-fa44f3a68d25" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a015f3-ad19-7ab1-bf80-7191e9281896" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a015f3-ad19-7a3a-811b-73bdf52585d7" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a015f3-ad19-7ab1-bf80-7191e9281896" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockCommonMember_01a015f3-ad19-75a2-bc8a-ab8277ffb2e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockCommonMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ParentMember_01a015f3-ad19-7a3a-811b-73bdf52585d7" xlink:to="loc_us-gaap_TreasuryStockCommonMember_01a015f3-ad19-75a2-bc8a-ab8277ffb2e9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestMember_01a015f3-ad19-756f-8ebb-c85f30064a05" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncontrollingInterestMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a015f3-ad19-738c-884d-3fee2832a9af" xlink:to="loc_us-gaap_NoncontrollingInterestMember_01a015f3-ad19-756f-8ebb-c85f30064a05" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a015f3-ad19-7b6b-bdb9-b05fdbe0d947" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a015f3-ad19-76a2-84b7-f66e3068e1bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a015f3-ad19-76a2-84b7-f66e3068e1bf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a015f3-ad19-756f-8b4f-332e9ded705a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_ProfitLoss_01a015f3-ad19-756f-8b4f-332e9ded705a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a015f3-ad19-7499-a35a-51490b47e24d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a015f3-ad19-7499-a35a-51490b47e24d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a015f3-ad19-77b8-a4e0-24f63df86572" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a015f3-ad19-77b8-a4e0-24f63df86572" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_01a1584b-bf89-7526-94c4-655ac6bb0a2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_01a1584b-bf89-7526-94c4-655ac6bb0a2b" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition_01a015f3-ad19-78ee-bf74-085f875d60fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationEmployeeStockPurchaseProgramRequisiteServicePeriodRecognition_01a015f3-ad19-78ee-bf74-085f875d60fb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_01a015f3-ad19-737c-9e28-2283191aa21c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_TreasuryStockValueAcquiredCostMethod_01a015f3-ad19-737c-9e28-2283191aa21c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_01a015f3-ad19-72d8-8e08-3dbaa725d0e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_01a015f3-ad19-72d8-8e08-3dbaa725d0e0" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsShareBasedCompensationCash_01a015f3-ad19-7b97-a44d-1355c88811dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsShareBasedCompensationCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_DividendsShareBasedCompensationCash_01a015f3-ad19-7b97-a44d-1355c88811dc" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsCash_01a015f3-ad19-7af0-9651-0197dcff7ab4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DividendsCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a015f3-ad19-79d3-8cb2-e1c2a1af9671" xlink:to="loc_us-gaap_DividendsCash_01a015f3-ad19-7af0-9651-0197dcff7ab4" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a015f3-ad19-7cf8-b7f0-46d181beadec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/BUSINESSANDBASISOFPRESENTATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#BUSINESSANDBASISOFPRESENTATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/BUSINESSANDBASISOFPRESENTATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_01a138b9-4c47-778e-8251-ca6e4d89e5fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_01a138b9-4c47-7663-b09a-4a11724b33ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_01a138b9-4c47-778e-8251-ca6e4d89e5fb" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_01a138b9-4c47-7663-b09a-4a11724b33ec" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangeInAccountingEstimateByTypeAxis_01a138b9-4c47-7688-857b-8abcb7addd14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ChangeInAccountingEstimateByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_01a138b9-4c47-7663-b09a-4a11724b33ec" xlink:to="loc_us-gaap_ChangeInAccountingEstimateByTypeAxis_01a138b9-4c47-7688-857b-8abcb7addd14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangeInAccountingEstimateTypeDomain_01a138b9-4c47-7688-857b-8abcb7addd14_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ChangeInAccountingEstimateTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ChangeInAccountingEstimateByTypeAxis_01a138b9-4c47-7688-857b-8abcb7addd14" xlink:to="loc_us-gaap_ChangeInAccountingEstimateTypeDomain_01a138b9-4c47-7688-857b-8abcb7addd14_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangeInAccountingEstimateTypeDomain_01a138b9-4c47-7e7a-abc5-3ae14d4fe68d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ChangeInAccountingEstimateTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ChangeInAccountingEstimateByTypeAxis_01a138b9-4c47-7688-857b-8abcb7addd14" xlink:to="loc_us-gaap_ChangeInAccountingEstimateTypeDomain_01a138b9-4c47-7e7a-abc5-3ae14d4fe68d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangeInAccountingMethodAccountedForAsChangeInEstimateMember_01a138b9-4c47-744c-bf79-fdc2614d8717" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ChangeInAccountingMethodAccountedForAsChangeInEstimateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ChangeInAccountingEstimateTypeDomain_01a138b9-4c47-7e7a-abc5-3ae14d4fe68d" xlink:to="loc_us-gaap_ChangeInAccountingMethodAccountedForAsChangeInEstimateMember_01a138b9-4c47-744c-bf79-fdc2614d8717" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a1a131-60f5-706b-92e1-4b93e473da3f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_01a138b9-4c47-778e-8251-ca6e4d89e5fb" xlink:to="loc_us-gaap_ProfitLoss_01a1a131-60f5-706b-92e1-4b93e473da3f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_01a18bda-89b3-7765-9b42-64323cbb6c90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_01a138b9-4c47-778e-8251-ca6e4d89e5fb" xlink:to="loc_us-gaap_EarningsPerShareBasic_01a18bda-89b3-7765-9b42-64323cbb6c90" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_01a18bda-54ca-776f-ad08-1b2085f960ef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_01a138b9-4c47-778e-8251-ca6e4d89e5fb" xlink:to="loc_us-gaap_EarningsPerShareDiluted_01a18bda-54ca-776f-ad08-1b2085f960ef" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/REVENUERECOGNITIONSCHEDULEOFDISAGGREGATIONOFREVENUEDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#REVENUERECOGNITIONSCHEDULEOFDISAGGREGATIONOFREVENUEDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/REVENUERECOGNITIONSCHEDULEOFDISAGGREGATIONOFREVENUEDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_01a015f3-ad19-7c8a-9c06-ed911e095864" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a015f3-ad19-7cf6-96d8-1e815426fad0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a015f3-ad19-7c8a-9c06-ed911e095864" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a015f3-ad19-7cf6-96d8-1e815426fad0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_01a015f3-ad19-78b5-89ac-4ae796e9a9db" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a015f3-ad19-7cf6-96d8-1e815426fad0" xlink:to="loc_srt_ProductOrServiceAxis_01a015f3-ad19-78b5-89ac-4ae796e9a9db" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a015f3-ad19-78b5-89ac-4ae796e9a9db_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_01a015f3-ad19-78b5-89ac-4ae796e9a9db" xlink:to="loc_srt_ProductsAndServicesDomain_01a015f3-ad19-78b5-89ac-4ae796e9a9db_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a015f3-ad19-798d-9d04-41741000e8c1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_01a015f3-ad19-78b5-89ac-4ae796e9a9db" xlink:to="loc_srt_ProductsAndServicesDomain_01a015f3-ad19-798d-9d04-41741000e8c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_EquipmentAndInstrumentsMember_01a015f3-ad19-73e8-8e05-21a29b78789f" xlink:href="xray-20260930.xsd#xray_EquipmentAndInstrumentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a015f3-ad19-798d-9d04-41741000e8c1" xlink:to="loc_xray_EquipmentAndInstrumentsMember_01a015f3-ad19-73e8-8e05-21a29b78789f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CADCAMMember_01a015f3-ad19-7ccd-a7df-59e5e9b04771" xlink:href="xray-20260930.xsd#xray_CADCAMMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a015f3-ad19-798d-9d04-41741000e8c1" xlink:to="loc_xray_CADCAMMember_01a015f3-ad19-7ccd-a7df-59e5e9b04771" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_OrthodonticsMember_01a015f3-ad19-7007-bd74-259a6440ed8a" xlink:href="xray-20260930.xsd#xray_OrthodonticsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a015f3-ad19-798d-9d04-41741000e8c1" xlink:to="loc_xray_OrthodonticsMember_01a015f3-ad19-7007-bd74-259a6440ed8a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_ImplantsAndProstheticsMember_01a015f3-ad19-70ac-9b01-e783637562de" xlink:href="xray-20260930.xsd#xray_ImplantsAndProstheticsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a015f3-ad19-798d-9d04-41741000e8c1" xlink:to="loc_xray_ImplantsAndProstheticsMember_01a015f3-ad19-70ac-9b01-e783637562de" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ad19-7796-8672-991066fa0c21" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a015f3-ad19-7cf6-96d8-1e815426fad0" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ad19-7796-8672-991066fa0c21" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a015f3-ad19-7796-8672-991066fa0c21_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ad19-7796-8672-991066fa0c21" xlink:to="loc_us-gaap_SegmentDomain_01a015f3-ad19-7796-8672-991066fa0c21_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a015f3-ad19-7b04-8353-7f4b29db7731" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ad19-7796-8672-991066fa0c21" xlink:to="loc_us-gaap_SegmentDomain_01a015f3-ad19-7b04-8353-7f4b29db7731" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_ConnectedTechnologySolutionsMember_01a015f3-ad19-7f5f-aaad-d4903fa95956" xlink:href="xray-20260930.xsd#xray_ConnectedTechnologySolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ad19-7b04-8353-7f4b29db7731" xlink:to="loc_xray_ConnectedTechnologySolutionsMember_01a015f3-ad19-7f5f-aaad-d4903fa95956" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_EssentialDentalSolutionsMember_01a015f3-ad19-737f-9cee-f2487804f79b" xlink:href="xray-20260930.xsd#xray_EssentialDentalSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ad19-7b04-8353-7f4b29db7731" xlink:to="loc_xray_EssentialDentalSolutionsMember_01a015f3-ad19-737f-9cee-f2487804f79b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_OrthodonticAndImplantSolutionsMember_01a015f3-ad19-7f81-a2d5-7192990012d0" xlink:href="xray-20260930.xsd#xray_OrthodonticAndImplantSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ad19-7b04-8353-7f4b29db7731" xlink:to="loc_xray_OrthodonticAndImplantSolutionsMember_01a015f3-ad19-7f81-a2d5-7192990012d0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_WellspectHealthcareMember_01a015f3-ad19-7ba7-8fb5-7912313176dc" xlink:href="xray-20260930.xsd#xray_WellspectHealthcareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ad19-7b04-8353-7f4b29db7731" xlink:to="loc_xray_WellspectHealthcareMember_01a015f3-ad19-7ba7-8fb5-7912313176dc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01a015f3-ad19-7b5b-a8a5-46a6ea07155f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a015f3-ad19-7cf6-96d8-1e815426fad0" xlink:to="loc_srt_ConsolidationItemsAxis_01a015f3-ad19-7b5b-a8a5-46a6ea07155f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a015f3-ad19-7b5b-a8a5-46a6ea07155f_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01a015f3-ad19-7b5b-a8a5-46a6ea07155f" xlink:to="loc_srt_ConsolidationItemsDomain_01a015f3-ad19-7b5b-a8a5-46a6ea07155f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a015f3-ad19-786a-8178-e51c335fa697" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01a015f3-ad19-7b5b-a8a5-46a6ea07155f" xlink:to="loc_srt_ConsolidationItemsDomain_01a015f3-ad19-786a-8178-e51c335fa697" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_01a015f3-ad19-7478-b1ab-5aed4d53887e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a015f3-ad19-786a-8178-e51c335fa697" xlink:to="loc_us-gaap_OperatingSegmentsMember_01a015f3-ad19-7478-b1ab-5aed4d53887e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a015f3-ad19-7b61-bb54-7602e48b148e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a015f3-ad19-7c8a-9c06-ed911e095864" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a015f3-ad19-7b61-bb54-7602e48b148e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/REVENUERECOGNITIONREVENUEFROMEXTERNALCUSTOMERSBYGEOGRAPHICAREASDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#REVENUERECOGNITIONREVENUEFROMEXTERNALCUSTOMERSBYGEOGRAPHICAREASDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/REVENUERECOGNITIONREVENUEFROMEXTERNALCUSTOMERSBYGEOGRAPHICAREASDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_01a015f3-ad19-7bfd-a1cf-50d96cc49c8e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a015f3-ad19-75fc-8bd6-c37327bc6d2f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a015f3-ad19-7bfd-a1cf-50d96cc49c8e" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a015f3-ad19-75fc-8bd6-c37327bc6d2f" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_StatementGeographicalAxis_01a015f3-ad19-7086-9fd4-db84cd8e9eef" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_StatementGeographicalAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a015f3-ad19-75fc-8bd6-c37327bc6d2f" xlink:to="loc_srt_StatementGeographicalAxis_01a015f3-ad19-7086-9fd4-db84cd8e9eef" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_01a015f3-ad19-7086-9fd4-db84cd8e9eef_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_StatementGeographicalAxis_01a015f3-ad19-7086-9fd4-db84cd8e9eef" xlink:to="loc_srt_SegmentGeographicalDomain_01a015f3-ad19-7086-9fd4-db84cd8e9eef_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_SegmentGeographicalDomain_01a015f3-ad19-78d1-9752-44e3e7037c60" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_SegmentGeographicalDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_StatementGeographicalAxis_01a015f3-ad19-7086-9fd4-db84cd8e9eef" xlink:to="loc_srt_SegmentGeographicalDomain_01a015f3-ad19-78d1-9752-44e3e7037c60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AmericasMember_01a015f3-ad19-7e16-ade7-9149a14c4519" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_AmericasMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a015f3-ad19-78d1-9752-44e3e7037c60" xlink:to="loc_srt_AmericasMember_01a015f3-ad19-7e16-ade7-9149a14c4519" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EMEAMember_01a015f3-ad19-70ed-a86a-7a8e58707e1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EMEAMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a015f3-ad19-78d1-9752-44e3e7037c60" xlink:to="loc_us-gaap_EMEAMember_01a015f3-ad19-70ed-a86a-7a8e58707e1d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_AsiaPacificMember_01a015f3-ad19-783a-92c5-08aa99548045" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_AsiaPacificMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_SegmentGeographicalDomain_01a015f3-ad19-78d1-9752-44e3e7037c60" xlink:to="loc_srt_AsiaPacificMember_01a015f3-ad19-783a-92c5-08aa99548045" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a015f3-ad19-71be-8a44-26c374531d9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a015f3-ad19-7bfd-a1cf-50d96cc49c8e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a015f3-ad19-71be-8a44-26c374531d9d" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/STOCKBASEDCOMPENSATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#STOCKBASEDCOMPENSATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/STOCKBASEDCOMPENSATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a015f3-ada9-774f-9c13-7fcaefdae564" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a015f3-ada9-7534-b108-369b4377a632" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a015f3-ada9-774f-9c13-7fcaefdae564" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a015f3-ada9-7534-b108-369b4377a632" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a015f3-ada9-7e21-9b18-8ecc7030f52b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a015f3-ada9-7534-b108-369b4377a632" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a015f3-ada9-7e21-9b18-8ecc7030f52b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a015f3-ada9-7081-8424-6fb942d6da51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a015f3-ada9-774f-9c13-7fcaefdae564" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a015f3-ada9-7081-8424-6fb942d6da51" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/STOCKBASEDCOMPENSATIONDetails_1" xlink:type="simple" xlink:href="xray-20260930.xsd#STOCKBASEDCOMPENSATIONDetails_1"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/STOCKBASEDCOMPENSATIONDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a015f3-ada9-774f-9c13-7fcaefdae564" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a015f3-ada9-7534-b108-369b4377a632" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a015f3-ada9-774f-9c13-7fcaefdae564" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a015f3-ada9-7534-b108-369b4377a632" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a015f3-ada9-7081-8424-6fb942d6da51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a015f3-ada9-774f-9c13-7fcaefdae564" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a015f3-ada9-7081-8424-6fb942d6da51" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/COMPREHENSIVELOSSBALANCESINCLUDEDINAOCINETOFTAXINTHECONSOLIDATEDBALANCESHEETSDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#COMPREHENSIVELOSSBALANCESINCLUDEDINAOCINETOFTAXINTHECONSOLIDATEDBALANCESHEETSDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/COMPREHENSIVELOSSBALANCESINCLUDEDINAOCINETOFTAXINTHECONSOLIDATEDBALANCESHEETSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a015f3-ada9-7a07-8c4a-209dea58231f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a015f3-ada9-7699-930b-683eaaa227de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a015f3-ada9-7a07-8c4a-209dea58231f" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a015f3-ada9-7699-930b-683eaaa227de" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ada9-786d-8c9b-40016e1590fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_01a015f3-ada9-7699-930b-683eaaa227de" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ada9-786d-8c9b-40016e1590fc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-786d-8c9b-40016e1590fc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ada9-786d-8c9b-40016e1590fc" xlink:to="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-786d-8c9b-40016e1590fc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-73d7-a43e-a2861657761e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ada9-786d-8c9b-40016e1590fc" xlink:to="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-73d7-a43e-a2861657761e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a015f3-ada9-7dd7-8e7f-5382a4557275" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-73d7-a43e-a2861657761e" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a015f3-ada9-7dd7-8e7f-5382a4557275" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedTranslationAdjustmentMember_01a015f3-ada9-757d-98db-e824486e084a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedTranslationAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a015f3-ada9-7dd7-8e7f-5382a4557275" xlink:to="loc_us-gaap_AccumulatedTranslationAdjustmentMember_01a015f3-ada9-757d-98db-e824486e084a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_01a015f3-ada9-7c62-a36e-503c45618d50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a015f3-ada9-7dd7-8e7f-5382a4557275" xlink:to="loc_us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_01a015f3-ada9-7c62-a36e-503c45618d50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_AccumulatedNetGainLossFromDerivativesNotDesignatedAsCashFlowHedgesAttributableToParentMember_01a015f3-ada9-75aa-8b8d-144a4bdf7888" xlink:href="xray-20260930.xsd#xray_AccumulatedNetGainLossFromDerivativesNotDesignatedAsCashFlowHedgesAttributableToParentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a015f3-ada9-7dd7-8e7f-5382a4557275" xlink:to="loc_xray_AccumulatedNetGainLossFromDerivativesNotDesignatedAsCashFlowHedgesAttributableToParentMember_01a015f3-ada9-75aa-8b8d-144a4bdf7888" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a015f3-ada9-7134-8451-011484352f0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a015f3-ada9-7dd7-8e7f-5382a4557275" xlink:to="loc_us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember_01a015f3-ada9-7134-8451-011484352f0c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a015f3-ada9-7987-b323-4222a375322b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_01a015f3-ada9-7a07-8c4a-209dea58231f" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a015f3-ada9-7987-b323-4222a375322b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a015f3-ada9-7a79-9c5b-892249c70450" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a015f3-ada9-7987-b323-4222a375322b" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a015f3-ada9-7a79-9c5b-892249c70450" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_01a015f3-ada9-7dd0-ab98-2b0917ff914b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a015f3-ada9-7987-b323-4222a375322b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax_01a015f3-ada9-7dd0-ab98-2b0917ff914b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossTax_01a015f3-ada9-7d9f-8f06-d3158d589169" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a015f3-ada9-7987-b323-4222a375322b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossTax_01a015f3-ada9-7d9f-8f06-d3158d589169" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_01a015f3-ada9-7224-91cb-11ca75b94a2a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a015f3-ada9-7987-b323-4222a375322b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax_01a015f3-ada9-7224-91cb-11ca75b94a2a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_01a015f3-ada9-727d-af52-4a4baddb8189" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a015f3-ada9-7987-b323-4222a375322b" xlink:to="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_01a015f3-ada9-727d-af52-4a4baddb8189" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a015f3-ada9-7d6d-acf9-5b4bb78150ee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_01a015f3-ada9-7987-b323-4222a375322b" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_01a015f3-ada9-7d6d-acf9-5b4bb78150ee" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a015f3-ada9-7765-b9eb-0c4f2024cac8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/COMPREHENSIVELOSSADDITIONALINFORMATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#COMPREHENSIVELOSSADDITIONALINFORMATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/COMPREHENSIVELOSSADDITIONALINFORMATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-726b-833e-4c1bd792e602" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a015f3-ada9-74f3-ad6a-1a62ce48e22c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-726b-833e-4c1bd792e602" xlink:to="loc_us-gaap_DerivativeTable_01a015f3-ada9-74f3-ad6a-1a62ce48e22c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ada9-74d4-9b53-cf4d7fe67468" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-74f3-ad6a-1a62ce48e22c" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ada9-74d4-9b53-cf4d7fe67468" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-74d4-9b53-cf4d7fe67468_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ada9-74d4-9b53-cf4d7fe67468" xlink:to="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-74d4-9b53-cf4d7fe67468_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-7ca9-9d18-fef784ed971a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a015f3-ada9-74d4-9b53-cf4d7fe67468" xlink:to="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-7ca9-9d18-fef784ed971a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestTranslationGainLossMember_01a015f3-ada9-7594-815a-6850efd879b5" xlink:href="xray-20260930.xsd#xray_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestTranslationGainLossMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-7ca9-9d18-fef784ed971a" xlink:to="loc_xray_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestTranslationGainLossMember_01a015f3-ada9-7594-815a-6850efd879b5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestNetInvestmentHedgesMember_01a015f3-ada9-7183-bd86-ceddce9d6b23" xlink:href="xray-20260930.xsd#xray_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestNetInvestmentHedgesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a015f3-ada9-7ca9-9d18-fef784ed971a" xlink:to="loc_xray_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestNetInvestmentHedgesMember_01a015f3-ada9-7183-bd86-ceddce9d6b23" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestTax_01a015f3-ada9-7ba5-b023-dadb2cbe35f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-726b-833e-4c1bd792e602" xlink:to="loc_us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestTax_01a015f3-ada9-7ba5-b023-dadb2cbe35f1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a015f3-ada9-7c01-9eee-1c418f04c92b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-726b-833e-4c1bd792e602" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_01a015f3-ada9-7c01-9eee-1c418f04c92b" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/SEGMENTINFORMATIONCOMPANYSREPORTABLESEGMENTINFORMATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#SEGMENTINFORMATIONCOMPANYSREPORTABLESEGMENTINFORMATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/SEGMENTINFORMATIONCOMPANYSREPORTABLESEGMENTINFORMATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EntityWideRevenueMajorCustomerLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_01a015f3-ada9-7521-bf69-ce80b61d6218" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_01a015f3-ada9-7521-bf69-ce80b61d6218" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ada9-7ea9-baa4-00741d6a8e4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_01a015f3-ada9-7521-bf69-ce80b61d6218" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ada9-7ea9-baa4-00741d6a8e4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a015f3-ada9-7ea9-baa4-00741d6a8e4e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ada9-7ea9-baa4-00741d6a8e4e" xlink:to="loc_us-gaap_SegmentDomain_01a015f3-ada9-7ea9-baa4-00741d6a8e4e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a015f3-ada9-7eb3-8225-51c1fbdbf4ea" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ada9-7ea9-baa4-00741d6a8e4e" xlink:to="loc_us-gaap_SegmentDomain_01a015f3-ada9-7eb3-8225-51c1fbdbf4ea" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_ConnectedTechnologySolutionsMember_01a015f3-ada9-704d-bff6-a7cade88fd59" xlink:href="xray-20260930.xsd#xray_ConnectedTechnologySolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ada9-7eb3-8225-51c1fbdbf4ea" xlink:to="loc_xray_ConnectedTechnologySolutionsMember_01a015f3-ada9-704d-bff6-a7cade88fd59" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_EssentialDentalSolutionsMember_01a015f3-ada9-7bc9-97e9-0f6b6a833d84" xlink:href="xray-20260930.xsd#xray_EssentialDentalSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ada9-7eb3-8225-51c1fbdbf4ea" xlink:to="loc_xray_EssentialDentalSolutionsMember_01a015f3-ada9-7bc9-97e9-0f6b6a833d84" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_OrthodonticAndImplantSolutionsMember_01a015f3-ada9-74f7-9366-60a004d9b597" xlink:href="xray-20260930.xsd#xray_OrthodonticAndImplantSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ada9-7eb3-8225-51c1fbdbf4ea" xlink:to="loc_xray_OrthodonticAndImplantSolutionsMember_01a015f3-ada9-74f7-9366-60a004d9b597" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_WellspectHealthcareMember_01a015f3-ada9-7211-9ec1-5b68cdae908d" xlink:href="xray-20260930.xsd#xray_WellspectHealthcareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ada9-7eb3-8225-51c1fbdbf4ea" xlink:to="loc_xray_WellspectHealthcareMember_01a015f3-ada9-7211-9ec1-5b68cdae908d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01a015f3-ada9-7dae-8084-f731ce78e69a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEntityWideRevenueByMajorCustomersByReportingSegmentsTable_01a015f3-ada9-7521-bf69-ce80b61d6218" xlink:to="loc_srt_ConsolidationItemsAxis_01a015f3-ada9-7dae-8084-f731ce78e69a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-7dae-8084-f731ce78e69a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01a015f3-ada9-7dae-8084-f731ce78e69a" xlink:to="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-7dae-8084-f731ce78e69a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-79ec-b850-929cea4b4bd9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01a015f3-ada9-7dae-8084-f731ce78e69a" xlink:to="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-79ec-b850-929cea4b4bd9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_01a015f3-ada9-70dd-8fa9-150d7c00b1e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-79ec-b850-929cea4b4bd9" xlink:to="loc_us-gaap_OperatingSegmentsMember_01a015f3-ada9-70dd-8fa9-150d7c00b1e8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_01a015f3-ada9-7c0d-8e5d-2b8aeb22640c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-79ec-b850-929cea4b4bd9" xlink:to="loc_us-gaap_CorporateNonSegmentMember_01a015f3-ada9-7c0d-8e5d-2b8aeb22640c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_01a015f3-ada9-78a3-8da3-cdad6d044119" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MaterialReconcilingItemsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-79ec-b850-929cea4b4bd9" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_01a015f3-ada9-78a3-8da3-cdad6d044119" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a015f3-ada9-7564-9e57-1ef39bfe6b2b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a015f3-ada9-7564-9e57-1ef39bfe6b2b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CostOfGoodsAndServicesSoldAdjusted_01a015f3-ada9-7c43-9e30-1d2a8b303dc0" xlink:href="xray-20260930.xsd#xray_CostOfGoodsAndServicesSoldAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_xray_CostOfGoodsAndServicesSoldAdjusted_01a015f3-ada9-7c43-9e30-1d2a8b303dc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_SellingExpenseAdjusted_01a015f3-ada9-7c48-a7f6-51e2bc8fbcfb" xlink:href="xray-20260930.xsd#xray_SellingExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_xray_SellingExpenseAdjusted_01a015f3-ada9-7c48-a7f6-51e2bc8fbcfb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_GeneralAndAdministrativeExpenseAdjusted_01a015f3-ada9-787b-9efb-4aaed57f5731" xlink:href="xray-20260930.xsd#xray_GeneralAndAdministrativeExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_xray_GeneralAndAdministrativeExpenseAdjusted_01a015f3-ada9-787b-9efb-4aaed57f5731" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_ResearchAndDevelopmentExpenseAdjusted_01a015f3-ada9-7807-b0d1-e636d2c391f7" xlink:href="xray-20260930.xsd#xray_ResearchAndDevelopmentExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_xray_ResearchAndDevelopmentExpenseAdjusted_01a015f3-ada9-7807-b0d1-e636d2c391f7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a015f3-ada9-76da-aae1-eae50148894f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_OperatingIncomeLoss_01a015f3-ada9-76da-aae1-eae50148894f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherOperatingIncomeExpenseNet_01a015f3-ada9-7c93-9fa3-96c6a3cbd2f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherOperatingIncomeExpenseNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_OtherOperatingIncomeExpenseNet_01a015f3-ada9-7c93-9fa3-96c6a3cbd2f0" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_01a015f3-ada9-73fb-86a6-3491c072b845" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_InterestExpenseNonoperating_01a015f3-ada9-73fb-86a6-3491c072b845" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a015f3-ada9-7fff-994a-1c55adcc2bba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a015f3-ada9-7fff-994a-1c55adcc2bba" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetImpairment_01a015f3-ada9-7d9d-b71c-a24408162557" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillAndIntangibleAssetImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetImpairment_01a015f3-ada9-7d9d-b71c-a24408162557" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a015f3-ada9-7d15-95a3-5c580ed011a8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_RestructuringCharges_01a015f3-ada9-7d15-95a3-5c580ed011a8" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_01a015f3-ada9-70c3-ad2b-f3f06f05ef50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_01a015f3-ada9-70c3-ad2b-f3f06f05ef50" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_BusinessCombinationProvisionalInformationInitialAccountingIncompletePropertyPlantAndEquipmentDepreciationExpense_01a015f3-ada9-71f6-bf98-bea93e01b9ac" xlink:href="xray-20260930.xsd#xray_BusinessCombinationProvisionalInformationInitialAccountingIncompletePropertyPlantAndEquipmentDepreciationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_xray_BusinessCombinationProvisionalInformationInitialAccountingIncompletePropertyPlantAndEquipmentDepreciationExpense_01a015f3-ada9-71f6-bf98-bea93e01b9ac" xlink:type="arc" order="12"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a015f3-ada9-7e1c-baec-ffc33606c370" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a015f3-ada9-7e1c-baec-ffc33606c370" xlink:type="arc" order="13"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_01a015f3-ada9-766c-b984-3fd2257ab8b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EntityWideRevenueMajorCustomerLineItems_01a015f3-ada9-7a0f-aa6b-533ed4c9f91e" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_01a015f3-ada9-766c-b984-3fd2257ab8b7" xlink:type="arc" order="14"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSCONSOLIDATEDSTATEMENTSOFOPERATIONSDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#RESTRUCTURINGANDOTHERCOSTSCONSOLIDATEDSTATEMENTSOFOPERATIONSDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSCONSOLIDATEDSTATEMENTSOFOPERATIONSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-707c-b80e-089e9df1f868" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7d7a-aecd-455dbde0a355" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-707c-b80e-089e9df1f868" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7d7a-aecd-455dbde0a355" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a015f3-ada9-7fe8-aa22-2ec3d1dbe29d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7d7a-aecd-455dbde0a355" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a015f3-ada9-7fe8-aa22-2ec3d1dbe29d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_01a015f3-ada9-7466-bc52-c39e6f7a2a20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-707c-b80e-089e9df1f868" xlink:to="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_01a015f3-ada9-7466-bc52-c39e6f7a2a20" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSCONSOLIDATEDSTATEMENTSOFOPERATIONSDetails_1" xlink:type="simple" xlink:href="xray-20260930.xsd#RESTRUCTURINGANDOTHERCOSTSCONSOLIDATEDSTATEMENTSOFOPERATIONSDetails_1"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSCONSOLIDATEDSTATEMENTSOFOPERATIONSDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-707c-b80e-089e9df1f868" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7d7a-aecd-455dbde0a355" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-707c-b80e-089e9df1f868" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7d7a-aecd-455dbde0a355" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_01a015f3-ada9-7466-bc52-c39e6f7a2a20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-707c-b80e-089e9df1f868" xlink:to="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_01a015f3-ada9-7466-bc52-c39e6f7a2a20" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSADDITIONALINFORMATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#RESTRUCTURINGANDOTHERCOSTSADDITIONALINFORMATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSADDITIONALINFORMATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a015f3-ada9-742f-8700-b96e7dce5563" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a015f3-ada9-742f-8700-b96e7dce5563" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7ea4-824d-88a287121342" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7ea4-824d-88a287121342" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-7ea4-824d-88a287121342_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7ea4-824d-88a287121342" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-7ea4-824d-88a287121342_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-77d0-86bb-f67764641b69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7ea4-824d-88a287121342" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-77d0-86bb-f67764641b69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_NonRecurringRestructuringActivityMember_01a015f3-ada9-7127-8786-0fb951fba781" xlink:href="xray-20260930.xsd#xray_NonRecurringRestructuringActivityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-77d0-86bb-f67764641b69" xlink:to="loc_xray_NonRecurringRestructuringActivityMember_01a015f3-ada9-7127-8786-0fb951fba781" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7cc2-8275-c38352feac41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:to="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7cc2-8275-c38352feac41" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7cc2-8275-c38352feac41_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7cc2-8275-c38352feac41" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7cc2-8275-c38352feac41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-70e2-97ac-13c0913c737d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7cc2-8275-c38352feac41" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-70e2-97ac-13c0913c737d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_TwentyTwentySixPlanMember_01a015f3-ada9-70d3-aaa8-4e14fe21a8e2" xlink:href="xray-20260930.xsd#xray_TwentyTwentySixPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-70e2-97ac-13c0913c737d" xlink:to="loc_xray_TwentyTwentySixPlanMember_01a015f3-ada9-70d3-aaa8-4e14fe21a8e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a015f3-ada9-7ed3-be61-a871bb1128ac" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:to="loc_srt_RangeAxis_01a015f3-ada9-7ed3-be61-a871bb1128ac" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a015f3-ada9-7ed3-be61-a871bb1128ac_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a015f3-ada9-7ed3-be61-a871bb1128ac" xlink:to="loc_srt_RangeMember_01a015f3-ada9-7ed3-be61-a871bb1128ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a015f3-ada9-7cf4-805a-33599a09843f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a015f3-ada9-7ed3-be61-a871bb1128ac" xlink:to="loc_srt_RangeMember_01a015f3-ada9-7cf4-805a-33599a09843f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a015f3-ada9-7a0d-af23-561fe1520692" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a015f3-ada9-7cf4-805a-33599a09843f" xlink:to="loc_srt_MinimumMember_01a015f3-ada9-7a0d-af23-561fe1520692" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a015f3-ada9-7937-8061-b3fe9db7d5d2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a015f3-ada9-7cf4-805a-33599a09843f" xlink:to="loc_srt_MaximumMember_01a015f3-ada9-7937-8061-b3fe9db7d5d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_01a015f3-ada9-7584-b39d-4252f8f6ce97" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:to="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_01a015f3-ada9-7584-b39d-4252f8f6ce97" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_01a015f3-ada9-74ab-b3bb-69deb0259e45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostCostIncurredToDate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:to="loc_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_01a015f3-ada9-74ab-b3bb-69deb0259e45" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_01a015f3-ada9-7bd1-ac2e-5b256fc397f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_01a015f3-ada9-7bd1-ac2e-5b256fc397f3" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSADDITIONALINFORMATIONDetails_1" xlink:type="simple" xlink:href="xray-20260930.xsd#RESTRUCTURINGANDOTHERCOSTSADDITIONALINFORMATIONDetails_1"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSADDITIONALINFORMATIONDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7ea4-824d-88a287121342" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7ea4-824d-88a287121342" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-7ea4-824d-88a287121342_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7ea4-824d-88a287121342" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-7ea4-824d-88a287121342_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-77d0-86bb-f67764641b69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7ea4-824d-88a287121342" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-77d0-86bb-f67764641b69" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_NonRecurringRestructuringActivityMember_01a015f3-ada9-7127-8786-0fb951fba781" xlink:href="xray-20260930.xsd#xray_NonRecurringRestructuringActivityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-77d0-86bb-f67764641b69" xlink:to="loc_xray_NonRecurringRestructuringActivityMember_01a015f3-ada9-7127-8786-0fb951fba781" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7cc2-8275-c38352feac41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:to="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7cc2-8275-c38352feac41" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7cc2-8275-c38352feac41_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7cc2-8275-c38352feac41" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7cc2-8275-c38352feac41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-70e2-97ac-13c0913c737d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7cc2-8275-c38352feac41" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-70e2-97ac-13c0913c737d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_TwentyTwentySixPlanMember_01a015f3-ada9-70d3-aaa8-4e14fe21a8e2" xlink:href="xray-20260930.xsd#xray_TwentyTwentySixPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-70e2-97ac-13c0913c737d" xlink:to="loc_xray_TwentyTwentySixPlanMember_01a015f3-ada9-70d3-aaa8-4e14fe21a8e2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a015f3-ada9-7ed3-be61-a871bb1128ac" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f7a-89f1-c2463a40acc5" xlink:to="loc_srt_RangeAxis_01a015f3-ada9-7ed3-be61-a871bb1128ac" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a015f3-ada9-7ed3-be61-a871bb1128ac_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a015f3-ada9-7ed3-be61-a871bb1128ac" xlink:to="loc_srt_RangeMember_01a015f3-ada9-7ed3-be61-a871bb1128ac_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a015f3-ada9-7cf4-805a-33599a09843f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a015f3-ada9-7ed3-be61-a871bb1128ac" xlink:to="loc_srt_RangeMember_01a015f3-ada9-7cf4-805a-33599a09843f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a015f3-ada9-7a0d-af23-561fe1520692" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a015f3-ada9-7cf4-805a-33599a09843f" xlink:to="loc_srt_MinimumMember_01a015f3-ada9-7a0d-af23-561fe1520692" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a015f3-ada9-7937-8061-b3fe9db7d5d2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a015f3-ada9-7cf4-805a-33599a09843f" xlink:to="loc_srt_MaximumMember_01a015f3-ada9-7937-8061-b3fe9db7d5d2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_01a015f3-ada9-7584-b39d-4252f8f6ce97" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostsAndAssetImpairmentCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:to="loc_us-gaap_RestructuringCostsAndAssetImpairmentCharges_01a015f3-ada9-7584-b39d-4252f8f6ce97" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_01a015f3-ada9-74ab-b3bb-69deb0259e45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostCostIncurredToDate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:to="loc_us-gaap_RestructuringAndRelatedCostCostIncurredToDate1_01a015f3-ada9-74ab-b3bb-69deb0259e45" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_01a015f3-ada9-7bd1-ac2e-5b256fc397f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7d21-bf62-cb30f5dfbaee" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_01a015f3-ada9-7bd1-ac2e-5b256fc397f3" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSRESTRUCTURINGACCRUALSDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#RESTRUCTURINGANDOTHERCOSTSRESTRUCTURINGACCRUALSDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSRESTRUCTURINGACCRUALSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7b64-b624-f999bef4d3cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-766d-8829-774117b227c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7b64-b624-f999bef4d3cf" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-766d-8829-774117b227c3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7c8e-91b8-643f0c95d0aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-766d-8829-774117b227c3" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7c8e-91b8-643f0c95d0aa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-7c8e-91b8-643f0c95d0aa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7c8e-91b8-643f0c95d0aa" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-7c8e-91b8-643f0c95d0aa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-711c-aec2-d046b269bacf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TypeOfRestructuringDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_01a015f3-ada9-7c8e-91b8-643f0c95d0aa" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-711c-aec2-d046b269bacf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeSeveranceMember_01a015f3-ada9-7442-b26f-321116aa7b78" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeSeveranceMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-711c-aec2-d046b269bacf" xlink:to="loc_us-gaap_EmployeeSeveranceMember_01a015f3-ada9-7442-b26f-321116aa7b78" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringMember_01a015f3-ada9-7614-b264-ef30511e8270" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherRestructuringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_01a015f3-ada9-711c-aec2-d046b269bacf" xlink:to="loc_us-gaap_OtherRestructuringMember_01a015f3-ada9-7614-b264-ef30511e8270" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7ae1-9950-60123ff4c5d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-766d-8829-774117b227c3" xlink:to="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7ae1-9950-60123ff4c5d7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7ae1-9950-60123ff4c5d7_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7ae1-9950-60123ff4c5d7" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7ae1-9950-60123ff4c5d7_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7bc7-ac4f-b7d70b398c73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringPlanDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_01a015f3-ada9-7ae1-9950-60123ff4c5d7" xlink:to="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7bc7-ac4f-b7d70b398c73" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_RestructuringFiscal2024AndPriorPlansMember_01a015f3-ada9-766e-9c36-536c317bed82" xlink:href="xray-20260930.xsd#xray_RestructuringFiscal2024AndPriorPlansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7bc7-ac4f-b7d70b398c73" xlink:to="loc_xray_RestructuringFiscal2024AndPriorPlansMember_01a015f3-ada9-766e-9c36-536c317bed82" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_TwentyTwentySixPlanMember_01a015f3-ada9-7fe7-a854-779ae71050eb" xlink:href="xray-20260930.xsd#xray_TwentyTwentySixPlanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7bc7-ac4f-b7d70b398c73" xlink:to="loc_xray_TwentyTwentySixPlanMember_01a015f3-ada9-7fe7-a854-779ae71050eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_OtherRestructuringActionsMember_01a015f3-ada9-786a-b80f-d7244e4d948f" xlink:href="xray-20260930.xsd#xray_OtherRestructuringActionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_01a015f3-ada9-7bc7-ac4f-b7d70b398c73" xlink:to="loc_xray_OtherRestructuringActionsMember_01a015f3-ada9-786a-b80f-d7244e4d948f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-7403-8a52-5289458bfda4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7b64-b624-f999bef4d3cf" xlink:to="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-7403-8a52-5289458bfda4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_01a015f3-ada9-751e-9c4f-0ff08343b983" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-7403-8a52-5289458bfda4" xlink:to="loc_us-gaap_RestructuringReserve_01a015f3-ada9-751e-9c4f-0ff08343b983" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCharges_01a015f3-ada9-7785-af5a-5859a295906e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCharges"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-7403-8a52-5289458bfda4" xlink:to="loc_us-gaap_RestructuringCharges_01a015f3-ada9-7785-af5a-5859a295906e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_01a015f3-ada9-74c1-b163-4015f1b1bee7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-7403-8a52-5289458bfda4" xlink:to="loc_us-gaap_PaymentsForRestructuring_01a015f3-ada9-74c1-b163-4015f1b1bee7" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveAccrualAdjustment1_01a015f3-ada9-7bf0-8a8e-530ef3e87799" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveAccrualAdjustment1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-7403-8a52-5289458bfda4" xlink:to="loc_us-gaap_RestructuringReserveAccrualAdjustment1_01a015f3-ada9-7bf0-8a8e-530ef3e87799" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_01a015f3-ada9-7edb-b97c-2c3a97ff332b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSPROVISIONSANDADJUSTMENTSANDAMOUNTSAPPLIEDFORALLPLANSBYSEGMENTDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#RESTRUCTURINGANDOTHERCOSTSPROVISIONSANDADJUSTMENTSANDAMOUNTSAPPLIEDFORALLPLANSBYSEGMENTDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/RESTRUCTURINGANDOTHERCOSTSPROVISIONSANDADJUSTMENTSANDAMOUNTSAPPLIEDFORALLPLANSBYSEGMENTDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7374-a45e-f69f3716fba6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringCostAndReserveLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f1e-a1b5-aa177adc0a55" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7374-a45e-f69f3716fba6" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f1e-a1b5-aa177adc0a55" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsAxis_01a015f3-ada9-7e74-a1ee-e0940e3d5d9f" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f1e-a1b5-aa177adc0a55" xlink:to="loc_srt_ConsolidationItemsAxis_01a015f3-ada9-7e74-a1ee-e0940e3d5d9f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-7e74-a1ee-e0940e3d5d9f_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ConsolidationItemsAxis_01a015f3-ada9-7e74-a1ee-e0940e3d5d9f" xlink:to="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-7e74-a1ee-e0940e3d5d9f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-7281-a594-1572b080f71a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ConsolidationItemsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ConsolidationItemsAxis_01a015f3-ada9-7e74-a1ee-e0940e3d5d9f" xlink:to="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-7281-a594-1572b080f71a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingSegmentsMember_01a015f3-ada9-7b59-817c-141d6c1f9f0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingSegmentsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-7281-a594-1572b080f71a" xlink:to="loc_us-gaap_OperatingSegmentsMember_01a015f3-ada9-7b59-817c-141d6c1f9f0f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateNonSegmentMember_01a015f3-ada9-7497-a652-ba85b6af68d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateNonSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ConsolidationItemsDomain_01a015f3-ada9-7281-a594-1572b080f71a" xlink:to="loc_us-gaap_CorporateNonSegmentMember_01a015f3-ada9-7497-a652-ba85b6af68d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ada9-78c9-83e5-61d498ddcb46" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_01a015f3-ada9-7f1e-a1b5-aa177adc0a55" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ada9-78c9-83e5-61d498ddcb46" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a015f3-ada9-78c9-83e5-61d498ddcb46_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ada9-78c9-83e5-61d498ddcb46" xlink:to="loc_us-gaap_SegmentDomain_01a015f3-ada9-78c9-83e5-61d498ddcb46_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a015f3-ada9-75a8-b678-b63ffba053c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-ada9-78c9-83e5-61d498ddcb46" xlink:to="loc_us-gaap_SegmentDomain_01a015f3-ada9-75a8-b678-b63ffba053c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_ConnectedTechnologySolutionsMember_01a015f3-ada9-7c71-bb8f-711d2228c5b2" xlink:href="xray-20260930.xsd#xray_ConnectedTechnologySolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ada9-75a8-b678-b63ffba053c5" xlink:to="loc_xray_ConnectedTechnologySolutionsMember_01a015f3-ada9-7c71-bb8f-711d2228c5b2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_EssentialDentalSolutionsMember_01a015f3-ada9-70a4-aca2-ed47291e0edb" xlink:href="xray-20260930.xsd#xray_EssentialDentalSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ada9-75a8-b678-b63ffba053c5" xlink:to="loc_xray_EssentialDentalSolutionsMember_01a015f3-ada9-70a4-aca2-ed47291e0edb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_OrthodonticAndImplantSolutionsMember_01a015f3-ada9-7733-9793-83c2a040c72c" xlink:href="xray-20260930.xsd#xray_OrthodonticAndImplantSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ada9-75a8-b678-b63ffba053c5" xlink:to="loc_xray_OrthodonticAndImplantSolutionsMember_01a015f3-ada9-7733-9793-83c2a040c72c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_WellspectHealthcareMember_01a015f3-ada9-7c2f-9afe-8d815b73fc94" xlink:href="xray-20260930.xsd#xray_WellspectHealthcareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-ada9-75a8-b678-b63ffba053c5" xlink:to="loc_xray_WellspectHealthcareMember_01a015f3-ada9-7c2f-9afe-8d815b73fc94" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-721d-80ee-e1226435e5cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_01a015f3-ada9-7374-a45e-f69f3716fba6" xlink:to="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-721d-80ee-e1226435e5cf" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_01a015f3-ada9-7e04-81df-708c02dfff19" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-721d-80ee-e1226435e5cf" xlink:to="loc_us-gaap_RestructuringReserve_01a015f3-ada9-7e04-81df-708c02dfff19" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_RestructuringReservePreviousAndCurrentAccrualAdjustments_01a015f3-ada9-7511-bda5-0b8dae1b2dd8" xlink:href="xray-20260930.xsd#xray_RestructuringReservePreviousAndCurrentAccrualAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-721d-80ee-e1226435e5cf" xlink:to="loc_xray_RestructuringReservePreviousAndCurrentAccrualAdjustments_01a015f3-ada9-7511-bda5-0b8dae1b2dd8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRestructuring_01a015f3-ada9-77d7-a049-d5d71923c358" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRestructuring"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-721d-80ee-e1226435e5cf" xlink:to="loc_us-gaap_PaymentsForRestructuring_01a015f3-ada9-77d7-a049-d5d71923c358" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserveAccrualAdjustment1_01a015f3-ada9-79eb-a59a-99f38e578ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserveAccrualAdjustment1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_01a015f3-ada9-721d-80ee-e1226435e5cf" xlink:to="loc_us-gaap_RestructuringReserveAccrualAdjustment1_01a015f3-ada9-79eb-a59a-99f38e578ed3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringReserve_01a015f3-ada9-767e-b5b5-474e3b8df8c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringReserve"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESDERIVATIVEINSTRUMENTSDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#FINANCIALINSTRUMENTSANDDERIVATIVESDERIVATIVEINSTRUMENTSDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESDERIVATIVEINSTRUMENTSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-732b-aea1-03a3e6815e96" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a015f3-ada9-74b5-b596-dcc55c88c13d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-732b-aea1-03a3e6815e96" xlink:to="loc_us-gaap_DerivativeTable_01a015f3-ada9-74b5-b596-dcc55c88c13d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7562-9676-7353f030f724" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-74b5-b596-dcc55c88c13d" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7562-9676-7353f030f724" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7562-9676-7353f030f724_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7562-9676-7353f030f724" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7562-9676-7353f030f724_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7526-bb33-0c07ea8bf693" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7562-9676-7353f030f724" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7526-bb33-0c07ea8bf693" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_01a015f3-ada9-7548-bf3a-3bdc6b84ae62" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7526-bb33-0c07ea8bf693" xlink:to="loc_us-gaap_ForeignExchangeContractMember_01a015f3-ada9-7548-bf3a-3bdc6b84ae62" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-753e-b357-bae6b7ba9ad8" xlink:href="xray-20260930.xsd#xray_CrossCurrencyBasisSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7526-bb33-0c07ea8bf693" xlink:to="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-753e-b357-bae6b7ba9ad8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-7203-b4f0-e50b4cd60f2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7526-bb33-0c07ea8bf693" xlink:to="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-7203-b4f0-e50b4cd60f2d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-751a-ac88-0fecf814263e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-74b5-b596-dcc55c88c13d" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-751a-ac88-0fecf814263e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-751a-ac88-0fecf814263e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-751a-ac88-0fecf814263e" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-751a-ac88-0fecf814263e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7530-ada6-521c58b2b7f3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-751a-ac88-0fecf814263e" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7530-ada6-521c58b2b7f3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_01a015f3-ada9-7ecc-8881-ae2f16bf3214" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7530-ada6-521c58b2b7f3" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_01a015f3-ada9-7ecc-8881-ae2f16bf3214" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_01a015f3-ada9-7785-af46-fdb8192b9443" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7530-ada6-521c58b2b7f3" xlink:to="loc_us-gaap_FairValueHedgingMember_01a015f3-ada9-7785-af46-fdb8192b9443" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cd3-a837-335615b2e087" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-74b5-b596-dcc55c88c13d" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cd3-a837-335615b2e087" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7cd3-a837-335615b2e087_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cd3-a837-335615b2e087" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7cd3-a837-335615b2e087_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-70db-8570-8da6f99be56f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cd3-a837-335615b2e087" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-70db-8570-8da6f99be56f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-736a-8466-495efb709a1b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-70db-8570-8da6f99be56f" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-736a-8466-495efb709a1b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a015f3-ada9-7b16-b55d-229d6c21cb5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-70db-8570-8da6f99be56f" xlink:to="loc_us-gaap_NondesignatedMember_01a015f3-ada9-7b16-b55d-229d6c21cb5f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_01a015f3-ada9-7446-92fb-535b2feae824" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-732b-aea1-03a3e6815e96" xlink:to="loc_us-gaap_DerivativeNotionalAmount_01a015f3-ada9-7446-92fb-535b2feae824" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_DerivativeNotionalamountmaturingwithin12months_01a015f3-ada9-7b86-bb3f-d9b8c623aac9" xlink:href="xray-20260930.xsd#xray_DerivativeNotionalamountmaturingwithin12months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-732b-aea1-03a3e6815e96" xlink:to="loc_xray_DerivativeNotionalamountmaturingwithin12months_01a015f3-ada9-7b86-bb3f-d9b8c623aac9" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESADDITIONALINFORMATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#FINANCIALINSTRUMENTSANDDERIVATIVESADDITIONALINFORMATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESADDITIONALINFORMATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-72d1-ae98-932967766888" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a015f3-ada9-7162-806d-19553123665c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-72d1-ae98-932967766888" xlink:to="loc_us-gaap_DerivativeTable_01a015f3-ada9-7162-806d-19553123665c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7b5d-b935-f03fe4a8989b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-7162-806d-19553123665c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7b5d-b935-f03fe4a8989b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7b5d-b935-f03fe4a8989b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7b5d-b935-f03fe4a8989b" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7b5d-b935-f03fe4a8989b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-727a-b421-c863bb33a147" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7b5d-b935-f03fe4a8989b" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-727a-b421-c863bb33a147" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7dd4-8726-c89c3aeff63d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-727a-b421-c863bb33a147" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7dd4-8726-c89c3aeff63d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7e5e-a8a7-c653be792eeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-7162-806d-19553123665c" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7e5e-a8a7-c653be792eeb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7e5e-a8a7-c653be792eeb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7e5e-a8a7-c653be792eeb" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7e5e-a8a7-c653be792eeb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-720d-b8fa-50f76ea70f94" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7e5e-a8a7-c653be792eeb" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-720d-b8fa-50f76ea70f94" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_01a015f3-ada9-7c15-8819-f62d4800fd32" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-720d-b8fa-50f76ea70f94" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_01a015f3-ada9-7c15-8819-f62d4800fd32" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7877-8b06-b626b33eae33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-7162-806d-19553123665c" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7877-8b06-b626b33eae33" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7877-8b06-b626b33eae33_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7877-8b06-b626b33eae33" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7877-8b06-b626b33eae33_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7e75-a32c-b33bff682178" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7877-8b06-b626b33eae33" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7e75-a32c-b33bff682178" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-74c1-9bf3-ba487c0f6238" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7e75-a32c-b33bff682178" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-74c1-9bf3-ba487c0f6238" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_01a015f3-ada9-772e-b505-2dfe718acc7e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-72d1-ae98-932967766888" xlink:to="loc_us-gaap_DerivativeNotionalAmount_01a015f3-ada9-772e-b505-2dfe718acc7e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForHedgeInvestingActivities_01a015f3-ada9-7b99-969c-3eeb4943e6e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForHedgeInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-72d1-ae98-932967766888" xlink:to="loc_us-gaap_PaymentsForHedgeInvestingActivities_01a015f3-ada9-7b99-969c-3eeb4943e6e0" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESGAINLOSSRECORDEDINAOCIINTHECONSOLIDATEDSTATEMENTSOFOPERATIONSDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#FINANCIALINSTRUMENTSANDDERIVATIVESGAINLOSSRECORDEDINAOCIINTHECONSOLIDATEDSTATEMENTSOFOPERATIONSDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESGAINLOSSRECORDEDINAOCIINTHECONSOLIDATEDSTATEMENTSOFOPERATIONSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7840-aea3-4501a1a0eafc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7840-aea3-4501a1a0eafc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7840-aea3-4501a1a0eafc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7840-aea3-4501a1a0eafc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7840-aea3-4501a1a0eafc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7840-aea3-4501a1a0eafc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-72c7-add8-94cacec76ab1" xlink:href="xray-20260930.xsd#xray_CrossCurrencyBasisSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:to="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-72c7-add8-94cacec76ab1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7df7-97be-1fd835eca7eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7df7-97be-1fd835eca7eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-71fe-ad3d-ef036c66e68c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:to="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-71fe-ad3d-ef036c66e68c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7156-97f8-6ea1c11b2368" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7156-97f8-6ea1c11b2368" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7156-97f8-6ea1c11b2368_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7156-97f8-6ea1c11b2368" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7156-97f8-6ea1c11b2368_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7282-9875-447b04fa1d2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7156-97f8-6ea1c11b2368" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7282-9875-447b04fa1d2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_01a015f3-ada9-7c12-958a-51963c1b62ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7282-9875-447b04fa1d2e" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_01a015f3-ada9-7c12-958a-51963c1b62ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_01a015f3-ada9-7d82-b069-145dbe3ad93d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7282-9875-447b04fa1d2e" xlink:to="loc_us-gaap_FairValueHedgingMember_01a015f3-ada9-7d82-b069-145dbe3ad93d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7c41-9dc3-8ac57ba15269" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7c41-9dc3-8ac57ba15269" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7c41-9dc3-8ac57ba15269_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7c41-9dc3-8ac57ba15269" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7c41-9dc3-8ac57ba15269_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7666-91ee-147307e5324c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7c41-9dc3-8ac57ba15269" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7666-91ee-147307e5324c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-7d43-8052-bd963f247bf3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7666-91ee-147307e5324c" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-7d43-8052-bd963f247bf3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a015f3-ada9-7e74-847f-85d2dedde71d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7666-91ee-147307e5324c" xlink:to="loc_us-gaap_NondesignatedMember_01a015f3-ada9-7e74-847f-85d2dedde71d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a015f3-ada9-709f-9c25-a092dc4da751" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a015f3-ada9-709f-9c25-a092dc4da751" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_01a015f3-ada9-7708-9371-cf092038bf06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_01a015f3-ada9-7708-9371-cf092038bf06" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_01a015f3-ada9-721f-a746-09f91932c4b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_InterestExpenseNonoperating_01a015f3-ada9-721f-a746-09f91932c4b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a015f3-ada9-7f34-90b8-bd632d39a5be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a015f3-ada9-7f34-90b8-bd632d39a5be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax_01a015f3-ada9-7ced-96e8-224be949dace" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax_01a015f3-ada9-7ced-96e8-224be949dace" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_01a015f3-ada9-7444-9105-245da3a71ebd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_01a015f3-ada9-7444-9105-245da3a71ebd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_01a015f3-ada9-731b-8d5c-7fa856ac190b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_01a015f3-ada9-731b-8d5c-7fa856ac190b" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESGAINLOSSRECORDEDINAOCIINTHECONSOLIDATEDSTATEMENTSOFOPERATIONSDetails_1" xlink:type="simple" xlink:href="xray-20260930.xsd#FINANCIALINSTRUMENTSANDDERIVATIVESGAINLOSSRECORDEDINAOCIINTHECONSOLIDATEDSTATEMENTSOFOPERATIONSDetails_1"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESGAINLOSSRECORDEDINAOCIINTHECONSOLIDATEDSTATEMENTSOFOPERATIONSDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7840-aea3-4501a1a0eafc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7840-aea3-4501a1a0eafc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7840-aea3-4501a1a0eafc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7840-aea3-4501a1a0eafc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7840-aea3-4501a1a0eafc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7840-aea3-4501a1a0eafc" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-72c7-add8-94cacec76ab1" xlink:href="xray-20260930.xsd#xray_CrossCurrencyBasisSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:to="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-72c7-add8-94cacec76ab1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7df7-97be-1fd835eca7eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7df7-97be-1fd835eca7eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-71fe-ad3d-ef036c66e68c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7f53-bd37-d4103cae78e9" xlink:to="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-71fe-ad3d-ef036c66e68c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7156-97f8-6ea1c11b2368" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7156-97f8-6ea1c11b2368" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7156-97f8-6ea1c11b2368_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7156-97f8-6ea1c11b2368" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7156-97f8-6ea1c11b2368_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7282-9875-447b04fa1d2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a015f3-ada9-7156-97f8-6ea1c11b2368" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7282-9875-447b04fa1d2e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_01a015f3-ada9-7c12-958a-51963c1b62ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7282-9875-447b04fa1d2e" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_01a015f3-ada9-7c12-958a-51963c1b62ec" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueHedgingMember_01a015f3-ada9-7d82-b069-145dbe3ad93d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a015f3-ada9-7282-9875-447b04fa1d2e" xlink:to="loc_us-gaap_FairValueHedgingMember_01a015f3-ada9-7d82-b069-145dbe3ad93d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7c41-9dc3-8ac57ba15269" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_01a015f3-ada9-7967-90a0-3ef7139a1167" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7c41-9dc3-8ac57ba15269" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7c41-9dc3-8ac57ba15269_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7c41-9dc3-8ac57ba15269" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7c41-9dc3-8ac57ba15269_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7666-91ee-147307e5324c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7c41-9dc3-8ac57ba15269" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7666-91ee-147307e5324c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-7d43-8052-bd963f247bf3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7666-91ee-147307e5324c" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-7d43-8052-bd963f247bf3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a015f3-ada9-7e74-847f-85d2dedde71d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7666-91ee-147307e5324c" xlink:to="loc_us-gaap_NondesignatedMember_01a015f3-ada9-7e74-847f-85d2dedde71d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_01a015f3-ada9-7708-9371-cf092038bf06" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfGoodsAndServicesSold"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_CostOfGoodsAndServicesSold_01a015f3-ada9-7708-9371-cf092038bf06" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_01a015f3-ada9-721f-a746-09f91932c4b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_InterestExpenseNonoperating_01a015f3-ada9-721f-a746-09f91932c4b6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a015f3-ada9-7f34-90b8-bd632d39a5be" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a015f3-ada9-7f34-90b8-bd632d39a5be" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax_01a015f3-ada9-7ced-96e8-224be949dace" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossDerivativeExcludedComponentIncreaseDecreaseBeforeAdjustmentsAndTax_01a015f3-ada9-7ced-96e8-224be949dace" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_01a015f3-ada9-7444-9105-245da3a71ebd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationBeforeTax_01a015f3-ada9-7444-9105-245da3a71ebd" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_01a015f3-ada9-731b-8d5c-7fa856ac190b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_01a015f3-ada9-7471-bb22-0c2ca9077db4" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax_01a015f3-ada9-731b-8d5c-7fa856ac190b" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETALLOCATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETALLOCATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETALLOCATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfFinancialPositionLocationBalanceAxis_01a015f3-ada9-7921-9ed9-34d939150326" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfFinancialPositionLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:to="loc_us-gaap_StatementOfFinancialPositionLocationBalanceAxis_01a015f3-ada9-7921-9ed9-34d939150326" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-72a9-8e52-4b1109422019" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-72a9-8e52-4b1109422019" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a9-8e52-4b1109422019_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-72a9-8e52-4b1109422019" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a9-8e52-4b1109422019_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-72a9-8e52-4b1109422019" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7ee1-aecd-310f8b1e3efa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7ee1-aecd-310f8b1e3efa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-7dc5-9542-24d48e9e0cee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:to="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-7dc5-9542-24d48e9e0cee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-787d-abd7-52c8db905e61" xlink:href="xray-20260930.xsd#xray_CrossCurrencyBasisSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:to="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-787d-abd7-52c8db905e61" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cf5-9759-fb128c143294" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cf5-9759-fb128c143294" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7cf5-9759-fb128c143294_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cf5-9759-fb128c143294" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7cf5-9759-fb128c143294_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-79f0-a100-77c5d69abacd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cf5-9759-fb128c143294" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-79f0-a100-77c5d69abacd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-7b17-a6de-5d13b9aace00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-79f0-a100-77c5d69abacd" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-7b17-a6de-5d13b9aace00" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a015f3-ada9-70e3-8f7d-525d5571d07b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-79f0-a100-77c5d69abacd" xlink:to="loc_us-gaap_NondesignatedMember_01a015f3-ada9-70e3-8f7d-525d5571d07b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_01a015f3-ada9-73c2-97a4-a5205fb41f84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_01a015f3-ada9-73c2-97a4-a5205fb41f84" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_01a015f3-ada9-7543-a1fb-4a5de1274d91" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_01a015f3-ada9-7543-a1fb-4a5de1274d91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_01a015f3-ada9-7fa0-ae93-584b19651473" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_01a015f3-ada9-7fa0-ae93-584b19651473" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a015f3-ada9-7ac8-8d1d-ebb5d85adcaf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a015f3-ada9-7ac8-8d1d-ebb5d85adcaf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_01a015f3-ada9-76ca-896c-4339a7bcc9fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_01a015f3-ada9-76ca-896c-4339a7bcc9fa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_01a015f3-ada9-7291-b0f3-3af1d2be218f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_01a015f3-ada9-7291-b0f3-3af1d2be218f" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETALLOCATIONDetails_1" xlink:type="simple" xlink:href="xray-20260930.xsd#FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETALLOCATIONDetails_1"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETALLOCATIONDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-72a9-8e52-4b1109422019" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-72a9-8e52-4b1109422019" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a9-8e52-4b1109422019_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-72a9-8e52-4b1109422019" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a9-8e52-4b1109422019_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-72a9-8e52-4b1109422019" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7ee1-aecd-310f8b1e3efa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-ada9-7ee1-aecd-310f8b1e3efa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-7dc5-9542-24d48e9e0cee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:to="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-7dc5-9542-24d48e9e0cee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-787d-abd7-52c8db905e61" xlink:href="xray-20260930.xsd#xray_CrossCurrencyBasisSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-701a-9999-e6cb9a035689" xlink:to="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-787d-abd7-52c8db905e61" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cf5-9759-fb128c143294" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeTable_01a015f3-ada9-7895-9ccc-9da67899816a" xlink:to="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cf5-9759-fb128c143294" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7cf5-9759-fb128c143294_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cf5-9759-fb128c143294" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-7cf5-9759-fb128c143294_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-79f0-a100-77c5d69abacd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingDesignationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_01a015f3-ada9-7cf5-9759-fb128c143294" xlink:to="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-79f0-a100-77c5d69abacd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-7b17-a6de-5d13b9aace00" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DesignatedAsHedgingInstrumentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-79f0-a100-77c5d69abacd" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_01a015f3-ada9-7b17-a6de-5d13b9aace00" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NondesignatedMember_01a015f3-ada9-70e3-8f7d-525d5571d07b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NondesignatedMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_01a015f3-ada9-79f0-a100-77c5d69abacd" xlink:to="loc_us-gaap_NondesignatedMember_01a015f3-ada9-70e3-8f7d-525d5571d07b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_01a015f3-ada9-73c2-97a4-a5205fb41f84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_01a015f3-ada9-73c2-97a4-a5205fb41f84" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_01a015f3-ada9-7543-a1fb-4a5de1274d91" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_01a015f3-ada9-7543-a1fb-4a5de1274d91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_01a015f3-ada9-7fa0-ae93-584b19651473" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsAssetAtFairValue_01a015f3-ada9-7fa0-ae93-584b19651473" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a015f3-ada9-7ac8-8d1d-ebb5d85adcaf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLiabilityAtFairValue_01a015f3-ada9-7ac8-8d1d-ebb5d85adcaf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_01a015f3-ada9-76ca-896c-4339a7bcc9fa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_01a015f3-ada9-76ca-896c-4339a7bcc9fa" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_01a015f3-ada9-7291-b0f3-3af1d2be218f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLineItems_01a015f3-ada9-7623-887a-3cb5cef163d4" xlink:to="loc_us-gaap_DerivativeLiabilityStatementOfFinancialPositionExtensibleEnumeration_01a015f3-ada9-7291-b0f3-3af1d2be218f" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETOFFSETTINGDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETOFFSETTINGDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FINANCIALINSTRUMENTSANDDERIVATIVESBALANCESHEETOFFSETTINGDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_01a015f3-ada9-7817-99ce-614ac82ab08f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativesFairValueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a015f3-ada9-7477-9801-f2384b0df22d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a015f3-ada9-7817-99ce-614ac82ab08f" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a015f3-ada9-7477-9801-f2384b0df22d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7325-a509-debe3bc9b12b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_01a015f3-ada9-7477-9801-f2384b0df22d" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7325-a509-debe3bc9b12b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7325-a509-debe3bc9b12b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7325-a509-debe3bc9b12b" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-7325-a509-debe3bc9b12b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a7-8238-0ec1d8e811e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-ada9-7325-a509-debe3bc9b12b" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a7-8238-0ec1d8e811e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeContractMember_01a015f3-ada9-7ba1-9b58-b4e615aa52f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a7-8238-0ec1d8e811e4" xlink:to="loc_us-gaap_ForeignExchangeContractMember_01a015f3-ada9-7ba1-9b58-b4e615aa52f0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-7c60-946b-45e82d20cf17" xlink:href="xray-20260930.xsd#xray_CrossCurrencyBasisSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a7-8238-0ec1d8e811e4" xlink:to="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-ada9-7c60-946b-45e82d20cf17" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-749f-a921-ad95f937ba50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-ada9-72a7-8238-0ec1d8e811e4" xlink:to="loc_us-gaap_InterestRateSwapMember_01a015f3-ada9-749f-a921-ad95f937ba50" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetFairValueNetAbstract_01a015f3-ada9-7414-9dd4-8e1348fc1a13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetFairValueNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a015f3-ada9-7817-99ce-614ac82ab08f" xlink:to="loc_us-gaap_DerivativeAssetFairValueNetAbstract_01a015f3-ada9-7414-9dd4-8e1348fc1a13" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_01a015f3-ada9-7221-884d-088eff8b451d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetFairValueNetAbstract_01a015f3-ada9-7414-9dd4-8e1348fc1a13" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_01a015f3-ada9-7221-884d-088eff8b451d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssetFairValueGrossLiability_01a015f3-ada9-7ca8-847b-49dbca4094cc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssetFairValueGrossLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetFairValueNetAbstract_01a015f3-ada9-7414-9dd4-8e1348fc1a13" xlink:to="loc_us-gaap_DerivativeAssetFairValueGrossLiability_01a015f3-ada9-7ca8-847b-49dbca4094cc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_01a015f3-ada9-7395-8250-37b4dfcd5676" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetFairValueNetAbstract_01a015f3-ada9-7414-9dd4-8e1348fc1a13" xlink:to="loc_us-gaap_DerivativeAssets_01a015f3-ada9-7395-8250-37b4dfcd5676" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnSecurities_01a015f3-ada9-76f0-8141-dbaebe4fe5f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeCollateralObligationToReturnSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetFairValueNetAbstract_01a015f3-ada9-7414-9dd4-8e1348fc1a13" xlink:to="loc_us-gaap_DerivativeCollateralObligationToReturnSecurities_01a015f3-ada9-76f0-8141-dbaebe4fe5f2" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralObligationToReturnCash_01a015f3-ada9-77af-99c0-c0a9b5795f68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeCollateralObligationToReturnCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetFairValueNetAbstract_01a015f3-ada9-7414-9dd4-8e1348fc1a13" xlink:to="loc_us-gaap_DerivativeCollateralObligationToReturnCash_01a015f3-ada9-77af-99c0-c0a9b5795f68" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_01a015f3-ada9-7166-9047-46e4cd2bf9cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeAssetFairValueNetAbstract_01a015f3-ada9-7414-9dd4-8e1348fc1a13" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral_01a015f3-ada9-7166-9047-46e4cd2bf9cb" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueNetAbstract_01a015f3-ada9-791b-a9ca-f5112830d750" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityFairValueNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_01a015f3-ada9-7817-99ce-614ac82ab08f" xlink:to="loc_us-gaap_DerivativeLiabilityFairValueNetAbstract_01a015f3-ada9-791b-a9ca-f5112830d750" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_01a015f3-ada9-7816-8a22-12853a36069a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueNetAbstract_01a015f3-ada9-791b-a9ca-f5112830d750" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_01a015f3-ada9-7816-8a22-12853a36069a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset_01a015f3-ada9-7879-92d5-4d8b030e93e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilityFairValueGrossAsset"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueNetAbstract_01a015f3-ada9-791b-a9ca-f5112830d750" xlink:to="loc_us-gaap_DerivativeLiabilityFairValueGrossAsset_01a015f3-ada9-7879-92d5-4d8b030e93e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_01a015f3-ada9-7ba9-8dee-02b8e2e71cdc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueNetAbstract_01a015f3-ada9-791b-a9ca-f5112830d750" xlink:to="loc_us-gaap_DerivativeLiabilities_01a015f3-ada9-7ba9-8dee-02b8e2e71cdc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralRightToReclaimSecurities_01a015f3-ada9-77f2-9f0e-828ad750d49f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeCollateralRightToReclaimSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueNetAbstract_01a015f3-ada9-791b-a9ca-f5112830d750" xlink:to="loc_us-gaap_DerivativeCollateralRightToReclaimSecurities_01a015f3-ada9-77f2-9f0e-828ad750d49f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeCollateralRightToReclaimCash_01a015f3-ada9-703f-bfa2-48e8753a13c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeCollateralRightToReclaimCash"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueNetAbstract_01a015f3-ada9-791b-a9ca-f5112830d750" xlink:to="loc_us-gaap_DerivativeCollateralRightToReclaimCash_01a015f3-ada9-703f-bfa2-48e8753a13c0" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral_01a015f3-ada9-71aa-ad21-4ac55b7289d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeLiabilityFairValueNetAbstract_01a015f3-ada9-791b-a9ca-f5112830d750" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountOffsetAgainstCollateral_01a015f3-ada9-71aa-ad21-4ac55b7289d5" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FAIRVALUEMEASUREMENTADDITIONALINFORMATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#FAIRVALUEMEASUREMENTADDITIONALINFORMATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FAIRVALUEMEASUREMENTADDITIONALINFORMATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7473-8dbe-585ab605c3ce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a015f3-adaa-753f-bef1-c85e303bd9bf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7473-8dbe-585ab605c3ce" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a015f3-adaa-753f-bef1-c85e303bd9bf" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementBasisAxis_01a015f3-adaa-7537-a45b-348f709d17b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementBasisAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a015f3-adaa-753f-bef1-c85e303bd9bf" xlink:to="loc_us-gaap_FairValueByMeasurementBasisAxis_01a015f3-adaa-7537-a45b-348f709d17b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a015f3-adaa-7537-a45b-348f709d17b5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_01a015f3-adaa-7537-a45b-348f709d17b5" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a015f3-adaa-7537-a45b-348f709d17b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a015f3-adaa-703f-aa7c-abaf1be0f650" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueDisclosureItemAmountsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementBasisAxis_01a015f3-adaa-7537-a45b-348f709d17b5" xlink:to="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a015f3-adaa-703f-aa7c-abaf1be0f650" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a015f3-adaa-765a-a3ad-7c6e8e3d7bca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueDisclosureItemAmountsDomain_01a015f3-adaa-703f-aa7c-abaf1be0f650" xlink:to="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a015f3-adaa-765a-a3ad-7c6e8e3d7bca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_01a015f3-adaa-7de7-8b8f-3b8477fa8e8b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a015f3-adaa-765a-a3ad-7c6e8e3d7bca" xlink:to="loc_us-gaap_EstimateOfFairValueFairValueDisclosureMember_01a015f3-adaa-7de7-8b8f-3b8477fa8e8b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01a015f3-adaa-7a9b-b4ee-c06621dde4a3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PortionAtFairValueFairValueDisclosureMember_01a015f3-adaa-765a-a3ad-7c6e8e3d7bca" xlink:to="loc_us-gaap_CarryingReportedAmountFairValueDisclosureMember_01a015f3-adaa-7a9b-b4ee-c06621dde4a3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a015f3-adaa-742b-a310-6d4cc8c45524" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7473-8dbe-585ab605c3ce" xlink:to="loc_us-gaap_LongTermDebt_01a015f3-adaa-742b-a310-6d4cc8c45524" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FAIRVALUEMEASUREMENTASSETSANDLIABILITIESRECURRINGDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#FAIRVALUEMEASUREMENTASSETSANDLIABILITIESRECURRINGDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FAIRVALUEMEASUREMENTASSETSANDLIABILITIESRECURRINGDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7b77-9d44-0d84bd19c841" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a015f3-adaa-7ab0-a6ad-206358aa5e0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByBalanceSheetGroupingTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7b77-9d44-0d84bd19c841" xlink:to="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a015f3-adaa-7ab0-a6ad-206358aa5e0c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-adaa-73ba-80a6-9526db147c9c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentRiskAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a015f3-adaa-7ab0-a6ad-206358aa5e0c" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-adaa-73ba-80a6-9526db147c9c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-adaa-73ba-80a6-9526db147c9c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-adaa-73ba-80a6-9526db147c9c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-adaa-73ba-80a6-9526db147c9c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-adaa-7222-a45d-4e75571edc3a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeContractTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_01a015f3-adaa-73ba-80a6-9526db147c9c" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-adaa-7222-a45d-4e75571edc3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestRateSwapMember_01a015f3-adaa-78d3-8795-f0ee164db880" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestRateSwapMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-adaa-7222-a45d-4e75571edc3a" xlink:to="loc_us-gaap_InterestRateSwapMember_01a015f3-adaa-78d3-8795-f0ee164db880" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-adaa-76b9-8a4e-d2596313bfd6" xlink:href="xray-20260930.xsd#xray_CrossCurrencyBasisSwapsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-adaa-7222-a45d-4e75571edc3a" xlink:to="loc_xray_CrossCurrencyBasisSwapsMember_01a015f3-adaa-76b9-8a4e-d2596313bfd6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-adaa-7534-bcee-013a7a24b65d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignExchangeForwardMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_01a015f3-adaa-7222-a45d-4e75571edc3a" xlink:to="loc_us-gaap_ForeignExchangeForwardMember_01a015f3-adaa-7534-bcee-013a7a24b65d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a015f3-adaa-72df-9b64-8ae03ecb4cf1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a015f3-adaa-7ab0-a6ad-206358aa5e0c" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a015f3-adaa-72df-9b64-8ae03ecb4cf1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a015f3-adaa-72df-9b64-8ae03ecb4cf1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a015f3-adaa-72df-9b64-8ae03ecb4cf1" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a015f3-adaa-72df-9b64-8ae03ecb4cf1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a015f3-adaa-72ac-8083-0b1c499dd92f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a015f3-adaa-72df-9b64-8ae03ecb4cf1" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a015f3-adaa-72ac-8083-0b1c499dd92f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a015f3-adaa-729e-bb48-b2c546f9bffa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a015f3-adaa-72ac-8083-0b1c499dd92f" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a015f3-adaa-729e-bb48-b2c546f9bffa" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a015f3-adaa-791b-8a7f-e6cb4999afe0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a015f3-adaa-72ac-8083-0b1c499dd92f" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a015f3-adaa-791b-8a7f-e6cb4999afe0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a015f3-adaa-79ee-ac81-0a157e25fa3e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a015f3-adaa-72ac-8083-0b1c499dd92f" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a015f3-adaa-79ee-ac81-0a157e25fa3e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a015f3-adaa-77ff-b689-b25aff84f280" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByMeasurementFrequencyAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueByBalanceSheetGroupingTable_01a015f3-adaa-7ab0-a6ad-206358aa5e0c" xlink:to="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a015f3-adaa-77ff-b689-b25aff84f280" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a015f3-adaa-77ff-b689-b25aff84f280_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a015f3-adaa-77ff-b689-b25aff84f280" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a015f3-adaa-77ff-b689-b25aff84f280_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a015f3-adaa-7710-8070-bcc4cd0ad134" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementFrequencyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByMeasurementFrequencyAxis_01a015f3-adaa-77ff-b689-b25aff84f280" xlink:to="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a015f3-adaa-7710-8070-bcc4cd0ad134" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsRecurringMember_01a015f3-adaa-7e51-a804-d84871ba73b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsRecurringMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementFrequencyDomain_01a015f3-adaa-7710-8070-bcc4cd0ad134" xlink:to="loc_us-gaap_FairValueMeasurementsRecurringMember_01a015f3-adaa-7e51-a804-d84871ba73b9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeAssets_01a015f3-adaa-71c0-844c-099dec7cf460" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7b77-9d44-0d84bd19c841" xlink:to="loc_us-gaap_DerivativeAssets_01a015f3-adaa-71c0-844c-099dec7cf460" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsFairValueDisclosure_01a015f3-adaa-7ac0-85c7-7d84f1d52f8f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7b77-9d44-0d84bd19c841" xlink:to="loc_us-gaap_AssetsFairValueDisclosure_01a015f3-adaa-7ac0-85c7-7d84f1d52f8f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilities_01a015f3-adaa-7974-b62c-2c9a361c9bcc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7b77-9d44-0d84bd19c841" xlink:to="loc_us-gaap_DerivativeLiabilities_01a015f3-adaa-7974-b62c-2c9a361c9bcc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_01a015f3-adaa-7cf3-971e-1ea26091a078" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_01a015f3-adaa-7b77-9d44-0d84bd19c841" xlink:to="loc_us-gaap_LiabilitiesFairValueDisclosure_01a015f3-adaa-7cf3-971e-1ea26091a078" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/FINANCINGARRANGEMENTSDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#FINANCINGARRANGEMENTSDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/FINANCINGARRANGEMENTSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentTable_01a015f3-adaa-7864-ac41-787ff2260a40" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_DebtInstrumentTable_01a015f3-adaa-7864-ac41-787ff2260a40" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a015f3-adaa-709f-b0e0-75ee3b0b945f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a015f3-adaa-7864-ac41-787ff2260a40" xlink:to="loc_us-gaap_CreditFacilityAxis_01a015f3-adaa-709f-b0e0-75ee3b0b945f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a015f3-adaa-709f-b0e0-75ee3b0b945f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a015f3-adaa-709f-b0e0-75ee3b0b945f" xlink:to="loc_us-gaap_CreditFacilityDomain_01a015f3-adaa-709f-b0e0-75ee3b0b945f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a015f3-adaa-721a-a140-f4a8665df788" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a015f3-adaa-709f-b0e0-75ee3b0b945f" xlink:to="loc_us-gaap_CreditFacilityDomain_01a015f3-adaa-721a-a140-f4a8665df788" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_01a015f3-adaa-7353-8d64-0cf448aaeec9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a015f3-adaa-721a-a140-f4a8665df788" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_01a015f3-adaa-7353-8d64-0cf448aaeec9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommercialPaperMember_01a015f3-adaa-76f6-9674-892c6344c962" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommercialPaperMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a015f3-adaa-721a-a140-f4a8665df788" xlink:to="loc_us-gaap_CommercialPaperMember_01a015f3-adaa-76f6-9674-892c6344c962" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a015f3-adaa-75b2-9b99-4608d83e1324" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a015f3-adaa-7864-ac41-787ff2260a40" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a015f3-adaa-75b2-9b99-4608d83e1324" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a015f3-adaa-75b2-9b99-4608d83e1324_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a015f3-adaa-75b2-9b99-4608d83e1324" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a015f3-adaa-75b2-9b99-4608d83e1324_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a015f3-adaa-747f-8836-4c6f44c3218a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a015f3-adaa-75b2-9b99-4608d83e1324" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a015f3-adaa-747f-8836-4c6f44c3218a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditMember_01a015f3-adaa-77a1-8183-eaa9b7663bae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a015f3-adaa-747f-8836-4c6f44c3218a" xlink:to="loc_us-gaap_LineOfCreditMember_01a015f3-adaa-77a1-8183-eaa9b7663bae" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_PrivatePlacementNotesMember_01a015f3-adaa-720f-902f-5da2a9364362" xlink:href="xray-20260930.xsd#xray_PrivatePlacementNotesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a015f3-adaa-747f-8836-4c6f44c3218a" xlink:to="loc_xray_PrivatePlacementNotesMember_01a015f3-adaa-720f-902f-5da2a9364362" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_01a015f3-adaa-74aa-bcf8-a36216e68824" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a015f3-adaa-7864-ac41-787ff2260a40" xlink:to="loc_us-gaap_ShortTermDebtTypeAxis_01a015f3-adaa-74aa-bcf8-a36216e68824" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_01a015f3-adaa-74aa-bcf8-a36216e68824_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_01a015f3-adaa-74aa-bcf8-a36216e68824" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_01a015f3-adaa-74aa-bcf8-a36216e68824_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_01a015f3-adaa-7ec9-bbaa-3de6c6a92c6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShortTermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_01a015f3-adaa-74aa-bcf8-a36216e68824" xlink:to="loc_us-gaap_ShortTermDebtTypeDomain_01a015f3-adaa-7ec9-bbaa-3de6c6a92c6d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_UncommittedShortTermFinancingMember_01a015f3-adaa-766a-8732-07d25ae2bf9c" xlink:href="xray-20260930.xsd#xray_UncommittedShortTermFinancingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_01a015f3-adaa-7ec9-bbaa-3de6c6a92c6d" xlink:to="loc_xray_UncommittedShortTermFinancingMember_01a015f3-adaa-766a-8732-07d25ae2bf9c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_OtherShortTermLoansMember_01a015f3-adaa-779a-b37f-009ac2d65aab" xlink:href="xray-20260930.xsd#xray_OtherShortTermLoansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_01a015f3-adaa-7ec9-bbaa-3de6c6a92c6d" xlink:to="loc_xray_OtherShortTermLoansMember_01a015f3-adaa-779a-b37f-009ac2d65aab" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentAxis_01a015f3-adaa-759c-977c-f4818abd2674" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a015f3-adaa-7864-ac41-787ff2260a40" xlink:to="loc_us-gaap_DebtInstrumentAxis_01a015f3-adaa-759c-977c-f4818abd2674" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a015f3-adaa-759c-977c-f4818abd2674_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a015f3-adaa-759c-977c-f4818abd2674" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a015f3-adaa-759c-977c-f4818abd2674_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_01a015f3-adaa-778c-afd4-494940a0d7de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_01a015f3-adaa-759c-977c-f4818abd2674" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_01a015f3-adaa-778c-afd4-494940a0d7de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_EuroDenominatedNoteDueFebruary2026Member_01a138e2-e8d2-7bc9-8a43-8337e515de29" xlink:href="xray-20260930.xsd#xray_EuroDenominatedNoteDueFebruary2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a015f3-adaa-778c-afd4-494940a0d7de" xlink:to="loc_xray_EuroDenominatedNoteDueFebruary2026Member_01a138e2-e8d2-7bc9-8a43-8337e515de29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_SwissFrancDenominatedNoteDueAugust2026Member_01a11c1f-958f-735c-a805-e36caf6013e4" xlink:href="xray-20260930.xsd#xray_SwissFrancDenominatedNoteDueAugust2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a015f3-adaa-778c-afd4-494940a0d7de" xlink:to="loc_xray_SwissFrancDenominatedNoteDueAugust2026Member_01a11c1f-958f-735c-a805-e36caf6013e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_EuroDenominatedNoteDueAugust2026Member_01a138e5-6a30-7424-be65-29b0bef8403f" xlink:href="xray-20260930.xsd#xray_EuroDenominatedNoteDueAugust2026Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_01a015f3-adaa-778c-afd4-494940a0d7de" xlink:to="loc_xray_EuroDenominatedNoteDueAugust2026Member_01a138e5-6a30-7424-be65-29b0bef8403f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingenciesByNatureAxis_01a015f3-adaa-79e6-aff3-27bb1f19bf47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingenciesByNatureAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a015f3-adaa-7864-ac41-787ff2260a40" xlink:to="loc_us-gaap_GainContingenciesByNatureAxis_01a015f3-adaa-79e6-aff3-27bb1f19bf47" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingencyNatureDomain_01a015f3-adaa-79e6-aff3-27bb1f19bf47_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_GainContingenciesByNatureAxis_01a015f3-adaa-79e6-aff3-27bb1f19bf47" xlink:to="loc_us-gaap_GainContingencyNatureDomain_01a015f3-adaa-79e6-aff3-27bb1f19bf47_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainContingencyNatureDomain_01a015f3-adaa-7002-99b4-b669d7b45192" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainContingencyNatureDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_GainContingenciesByNatureAxis_01a015f3-adaa-79e6-aff3-27bb1f19bf47" xlink:to="loc_us-gaap_GainContingencyNatureDomain_01a015f3-adaa-7002-99b4-b669d7b45192" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_IEEPATariffRefundMember_01a015f3-adaa-7b32-9d8c-3eff32460014" xlink:href="xray-20260930.xsd#xray_IEEPATariffRefundMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GainContingencyNatureDomain_01a015f3-adaa-7002-99b4-b669d7b45192" xlink:to="loc_xray_IEEPATariffRefundMember_01a015f3-adaa-7b32-9d8c-3eff32460014" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01a161b9-d934-7721-adb7-7abd7c15c56b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_01a015f3-adaa-7864-ac41-787ff2260a40" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01a161b9-d934-7721-adb7-7abd7c15c56b" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a161b9-d934-7721-adb7-7abd7c15c56b_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a161b9-d934-7721-adb7-7abd7c15c56b" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a161b9-d934-7721-adb7-7abd7c15c56b_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a161b9-d934-7b57-90db-af00c6bd6afc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a161b9-d934-7721-adb7-7abd7c15c56b" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a161b9-d934-7b57-90db-af00c6bd6afc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_01a161b9-fb0b-7b00-8677-2c0d04bc01a7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_01a161b9-d934-7b57-90db-af00c6bd6afc" xlink:to="loc_us-gaap_SubsequentEventMember_01a161b9-fb0b-7b00-8677-2c0d04bc01a7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtTerm_01a015f3-adaa-725d-a08f-b6f1330189c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtTerm"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_LongTermDebtTerm_01a015f3-adaa-725d-a08f-b6f1330189c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a015f3-adaa-70d9-890e-5de07cbff3fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a015f3-adaa-70d9-890e-5de07cbff3fb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtCurrent_01a015f3-adaa-7eeb-88d7-369f1f345df1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_DebtCurrent_01a015f3-adaa-7eeb-88d7-369f1f345df1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_01a015f3-adaa-7c9f-907a-79a17425006b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtWeightedAverageInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_DebtWeightedAverageInterestRate_01a015f3-adaa-7c9f-907a-79a17425006b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_01a015f3-adaa-7956-8b53-19cc06769ca4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_01a015f3-adaa-7956-8b53-19cc06769ca4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_01a015f3-adaa-7b59-92d5-abb5f7feb213" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_01a015f3-adaa-7b59-92d5-abb5f7feb213" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtPercentageBearingFixedInterestRate_01a015f3-adaa-72db-a5aa-22c279b32bcd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtPercentageBearingFixedInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_LongTermDebtPercentageBearingFixedInterestRate_01a015f3-adaa-72db-a5aa-22c279b32bcd" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a015f3-adaa-751f-994e-ab71d6caed15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_LongTermDebt_01a015f3-adaa-751f-994e-ab71d6caed15" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtRestructuringCosts_01a1586f-4b5d-7761-b94e-ed513fc7e4dd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDebtRestructuringCosts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_PaymentsOfDebtRestructuringCosts_01a1586f-4b5d-7761-b94e-ed513fc7e4dd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_InterestIncomeInterestEarningAssetAndCustomerFinancing_01a015f3-adaa-7100-ac0d-5ecfe78dcea0" xlink:href="xray-20260930.xsd#xray_InterestIncomeInterestEarningAssetAndCustomerFinancing"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_xray_InterestIncomeInterestEarningAssetAndCustomerFinancing_01a015f3-adaa-7100-ac0d-5ecfe78dcea0" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_01a015f3-adaa-7a12-9313-d250fa4eab9a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_01a015f3-adaa-7c7a-9f87-fd0381bd5528" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_01a015f3-adaa-7a12-9313-d250fa4eab9a" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/GOODWILLANDINTANGIBLEASSETSADDITIONALINFORMATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#GOODWILLANDINTANGIBLEASSETSADDITIONALINFORMATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/GOODWILLANDINTANGIBLEASSETSADDITIONALINFORMATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-7324-b954-b73eddd5fda2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_01a015f3-adaa-775f-99d1-7144271658de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-7324-b954-b73eddd5fda2" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_01a015f3-adaa-775f-99d1-7144271658de" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a015f3-adaa-7f35-bdc9-0da6a7a7992a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_01a015f3-adaa-775f-99d1-7144271658de" xlink:to="loc_srt_RangeAxis_01a015f3-adaa-7f35-bdc9-0da6a7a7992a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a015f3-adaa-7f35-bdc9-0da6a7a7992a_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a015f3-adaa-7f35-bdc9-0da6a7a7992a" xlink:to="loc_srt_RangeMember_01a015f3-adaa-7f35-bdc9-0da6a7a7992a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a015f3-adaa-75f9-9b76-6a4d908de494" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a015f3-adaa-7f35-bdc9-0da6a7a7992a" xlink:to="loc_srt_RangeMember_01a015f3-adaa-75f9-9b76-6a4d908de494" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a015f3-adaa-7195-93d3-a4cd0fcfbd80" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a015f3-adaa-75f9-9b76-6a4d908de494" xlink:to="loc_srt_MinimumMember_01a015f3-adaa-7195-93d3-a4cd0fcfbd80" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a015f3-adaa-7aa4-80eb-391a9fac2aeb" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a015f3-adaa-75f9-9b76-6a4d908de494" xlink:to="loc_srt_MaximumMember_01a015f3-adaa-7aa4-80eb-391a9fac2aeb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeAxis_01a015f3-adaa-7e7a-b42d-03eee1839621" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_01a015f3-adaa-775f-99d1-7144271658de" xlink:to="loc_us-gaap_MeasurementInputTypeAxis_01a015f3-adaa-7e7a-b42d-03eee1839621" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_01a015f3-adaa-7e7a-b42d-03eee1839621_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_01a015f3-adaa-7e7a-b42d-03eee1839621" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_01a015f3-adaa-7e7a-b42d-03eee1839621_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputTypeDomain_01a015f3-adaa-704f-828f-68184950fba3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MeasurementInputTypeAxis_01a015f3-adaa-7e7a-b42d-03eee1839621" xlink:to="loc_us-gaap_MeasurementInputTypeDomain_01a015f3-adaa-704f-828f-68184950fba3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MeasurementInputDiscountRateMember_01a015f3-adaa-7a12-bafa-b5ca7037eea6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_MeasurementInputDiscountRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MeasurementInputTypeDomain_01a015f3-adaa-704f-828f-68184950fba3" xlink:to="loc_us-gaap_MeasurementInputDiscountRateMember_01a015f3-adaa-7a12-bafa-b5ca7037eea6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a176e3-8e12-74fa-800e-b6ea42928ce8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_01a015f3-adaa-775f-99d1-7144271658de" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a176e3-8e12-74fa-800e-b6ea42928ce8" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a176e3-8e12-74fa-800e-b6ea42928ce8_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a176e3-8e12-74fa-800e-b6ea42928ce8" xlink:to="loc_us-gaap_SegmentDomain_01a176e3-8e12-74fa-800e-b6ea42928ce8_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a176e3-8e12-744c-93cc-217c77c329cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a176e3-8e12-74fa-800e-b6ea42928ce8" xlink:to="loc_us-gaap_SegmentDomain_01a176e3-8e12-744c-93cc-217c77c329cf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_OrthodonticAndImplantSolutionsMember_01a176e3-8e12-78ef-aa1b-bcf3e7f00f39" xlink:href="xray-20260930.xsd#xray_OrthodonticAndImplantSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a176e3-8e12-744c-93cc-217c77c329cf" xlink:to="loc_xray_OrthodonticAndImplantSolutionsMember_01a176e3-8e12-78ef-aa1b-bcf3e7f00f39" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_EssentialDentalSolutionsMember_01a176e3-8e12-7401-8d56-41852c7d5bdc" xlink:href="xray-20260930.xsd#xray_EssentialDentalSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a176e3-8e12-744c-93cc-217c77c329cf" xlink:to="loc_xray_EssentialDentalSolutionsMember_01a176e3-8e12-7401-8d56-41852c7d5bdc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_NumberOfReportingUnitsTestedForGoodwillImpairment_01a015f3-adaa-7f80-a015-2636167dfa38" xlink:href="xray-20260930.xsd#xray_NumberOfReportingUnitsTestedForGoodwillImpairment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-7324-b954-b73eddd5fda2" xlink:to="loc_xray_NumberOfReportingUnitsTestedForGoodwillImpairment_01a015f3-adaa-7f80-a015-2636167dfa38" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_IntangibleAssetMeasurementInput_01a015f3-adaa-7566-a60c-0e60e12cc97b" xlink:href="xray-20260930.xsd#xray_IntangibleAssetMeasurementInput"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-7324-b954-b73eddd5fda2" xlink:to="loc_xray_IntangibleAssetMeasurementInput_01a015f3-adaa-7566-a60c-0e60e12cc97b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_01a176e3-8e12-7960-93d5-137aa8f12115" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-7324-b954-b73eddd5fda2" xlink:to="loc_us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill_01a176e3-8e12-7960-93d5-137aa8f12115" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsPeriodIncreaseDecrease_01a015f3-adaa-71df-83b4-3d147b72d2fd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsPeriodIncreaseDecrease"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-7324-b954-b73eddd5fda2" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsPeriodIncreaseDecrease_01a015f3-adaa-71df-83b4-3d147b72d2fd" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/GOODWILLANDINTANGIBLEASSETSRECONCILIATIONOFCHANGESINGOODWILLDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#GOODWILLANDINTANGIBLEASSETSRECONCILIATIONOFCHANGESINGOODWILLDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/GOODWILLANDINTANGIBLEASSETSRECONCILIATIONOFCHANGESINGOODWILLDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-75c2-a79e-edfa52f76eb8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_01a015f3-adaa-7e55-98e9-d0c91e709121" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfGoodwillTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-75c2-a79e-edfa52f76eb8" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_01a015f3-adaa-7e55-98e9-d0c91e709121" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-adaa-7b85-984b-69b09d16a051" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_01a015f3-adaa-7e55-98e9-d0c91e709121" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-adaa-7b85-984b-69b09d16a051" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a015f3-adaa-7b85-984b-69b09d16a051_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-adaa-7b85-984b-69b09d16a051" xlink:to="loc_us-gaap_SegmentDomain_01a015f3-adaa-7b85-984b-69b09d16a051_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a015f3-adaa-744e-9ff8-0a85c62fae4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a015f3-adaa-7b85-984b-69b09d16a051" xlink:to="loc_us-gaap_SegmentDomain_01a015f3-adaa-744e-9ff8-0a85c62fae4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_ConnectedTechnologySolutionsMember_01a015f3-adaa-7bfb-b71a-326bce4c2b62" xlink:href="xray-20260930.xsd#xray_ConnectedTechnologySolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-adaa-744e-9ff8-0a85c62fae4e" xlink:to="loc_xray_ConnectedTechnologySolutionsMember_01a015f3-adaa-7bfb-b71a-326bce4c2b62" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_EssentialDentalSolutionsMember_01a015f3-adaa-7994-a4ae-13ce8684b483" xlink:href="xray-20260930.xsd#xray_EssentialDentalSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-adaa-744e-9ff8-0a85c62fae4e" xlink:to="loc_xray_EssentialDentalSolutionsMember_01a015f3-adaa-7994-a4ae-13ce8684b483" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_OrthodonticAndImplantSolutionsMember_01a015f3-adaa-7bf5-8fac-91e62c4dcccf" xlink:href="xray-20260930.xsd#xray_OrthodonticAndImplantSolutionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-adaa-744e-9ff8-0a85c62fae4e" xlink:to="loc_xray_OrthodonticAndImplantSolutionsMember_01a015f3-adaa-7bf5-8fac-91e62c4dcccf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_WellspectHealthcareMember_01a015f3-adaa-7876-b792-ea12a45021fb" xlink:href="xray-20260930.xsd#xray_WellspectHealthcareMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a015f3-adaa-744e-9ff8-0a85c62fae4e" xlink:to="loc_xray_WellspectHealthcareMember_01a015f3-adaa-7876-b792-ea12a45021fb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_01a015f3-adaa-788d-8e30-6eb9f89eaa1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_01a015f3-adaa-75c2-a79e-edfa52f76eb8" xlink:to="loc_us-gaap_GoodwillRollForward_01a015f3-adaa-788d-8e30-6eb9f89eaa1d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillGross_01a015f3-adaa-7c0e-b817-70781b9d4dc5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a015f3-adaa-788d-8e30-6eb9f89eaa1d" xlink:to="loc_us-gaap_GoodwillGross_01a015f3-adaa-7c0e-b817-70781b9d4dc5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_01a015f3-adaa-7ff4-8791-c13cbb28df79" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a015f3-adaa-788d-8e30-6eb9f89eaa1d" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_01a015f3-adaa-7ff4-8791-c13cbb28df79" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a015f3-adaa-7c8b-83b7-650087ce3721" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a015f3-adaa-788d-8e30-6eb9f89eaa1d" xlink:to="loc_us-gaap_Goodwill_01a015f3-adaa-7c8b-83b7-650087ce3721" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_01a015f3-adaa-79bf-9ca2-6008cf1acf30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a015f3-adaa-788d-8e30-6eb9f89eaa1d" xlink:to="loc_us-gaap_GoodwillForeignCurrencyTranslationGainLoss_01a015f3-adaa-79bf-9ca2-6008cf1acf30" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillImpairmentLoss_01a015f3-adaa-753f-b0ce-a2a9f3122907" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a015f3-adaa-788d-8e30-6eb9f89eaa1d" xlink:to="loc_us-gaap_GoodwillImpairmentLoss_01a015f3-adaa-753f-b0ce-a2a9f3122907" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a015f3-adaa-79e2-83d5-d812f60a964b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/GOODWILLANDINTANGIBLEASSETSIDENTIFIABLEDEFINITELIVEDANDINDEFINITELIVEDINTANGIBLEASSETSDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#GOODWILLANDINTANGIBLEASSETSIDENTIFIABLEDEFINITELIVEDANDINDEFINITELIVEDINTANGIBLEASSETSDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/GOODWILLANDINTANGIBLEASSETSIDENTIFIABLEDEFINITELIVEDANDINDEFINITELIVEDINTANGIBLEASSETSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a015f3-adaa-7282-ab7d-9b27fc293c01" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a015f3-adaa-7168-9cd8-e0437371cd0b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a015f3-adaa-7282-ab7d-9b27fc293c01" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a015f3-adaa-7168-9cd8-e0437371cd0b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a015f3-adaa-70f7-a2d8-1cbd39cd3acd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_01a015f3-adaa-7168-9cd8-e0437371cd0b" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a015f3-adaa-70f7-a2d8-1cbd39cd3acd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-70f7-a2d8-1cbd39cd3acd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a015f3-adaa-70f7-a2d8-1cbd39cd3acd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-70f7-a2d8-1cbd39cd3acd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-747b-a4b7-e6d50c917bd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a015f3-adaa-70f7-a2d8-1cbd39cd3acd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-747b-a4b7-e6d50c917bd5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_01a015f3-adaa-713e-9d6c-89780ead41c0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-747b-a4b7-e6d50c917bd5" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_01a015f3-adaa-713e-9d6c-89780ead41c0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_01a015f3-adaa-7876-837b-3db1b033fe10" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-747b-a4b7-e6d50c917bd5" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_01a015f3-adaa-7876-837b-3db1b033fe10" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LicensingAgreementsMember_01a015f3-adaa-7298-9a1c-a5d532cef534" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LicensingAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-747b-a4b7-e6d50c917bd5" xlink:to="loc_us-gaap_LicensingAgreementsMember_01a015f3-adaa-7298-9a1c-a5d532cef534" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_01a015f3-adaa-7980-8aed-801fa95a3a51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-747b-a4b7-e6d50c917bd5" xlink:to="loc_us-gaap_CustomerRelationshipsMember_01a015f3-adaa-7980-8aed-801fa95a3a51" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a015f3-adaa-754e-8db5-3611f88d25d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a015f3-adaa-7282-ab7d-9b27fc293c01" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a015f3-adaa-754e-8db5-3611f88d25d4" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a015f3-adaa-7a8c-847c-90d3861a6c5a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a015f3-adaa-7282-ab7d-9b27fc293c01" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a015f3-adaa-7a8c-847c-90d3861a6c5a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a015f3-adaa-70bb-a974-af830222c77e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_01a015f3-adaa-7282-ab7d-9b27fc293c01" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a015f3-adaa-70bb-a974-af830222c77e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_01a015f3-adaa-7805-874d-6afc4638997d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_01a015f3-adaa-7f4a-86c4-0def0237eda1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_01a015f3-adaa-7805-874d-6afc4638997d" xlink:to="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_01a015f3-adaa-7f4a-86c4-0def0237eda1" xlink:type="arc" order="2" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_01a015f3-adaa-7be0-b48f-dd40e1be112f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfIndefiniteLivedIntangibleAssetsTable_01a015f3-adaa-7f4a-86c4-0def0237eda1" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_01a015f3-adaa-7be0-b48f-dd40e1be112f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-7be0-b48f-dd40e1be112f_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_01a015f3-adaa-7be0-b48f-dd40e1be112f" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-7be0-b48f-dd40e1be112f_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-7dcd-bcc3-f4c201ad1f22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis_01a015f3-adaa-7be0-b48f-dd40e1be112f" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-7dcd-bcc3-f4c201ad1f22" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TrademarksAndTradeNamesMember_01a015f3-adaa-7754-8ab3-710d243ee757" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TrademarksAndTradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-7dcd-bcc3-f4c201ad1f22" xlink:to="loc_us-gaap_TrademarksAndTradeNamesMember_01a015f3-adaa-7754-8ab3-710d243ee757" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InProcessResearchAndDevelopmentMember_01a015f3-adaa-7510-9394-7a634c7ca7ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InProcessResearchAndDevelopmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain_01a015f3-adaa-7dcd-bcc3-f4c201ad1f22" xlink:to="loc_us-gaap_InProcessResearchAndDevelopmentMember_01a015f3-adaa-7510-9394-7a634c7ca7ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_01a015f3-adaa-7ef5-9f84-906f9c2e3d9e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassLineItems_01a015f3-adaa-7805-874d-6afc4638997d" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_01a015f3-adaa-7ef5-9f84-906f9c2e3d9e" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/CONTINGENCIESANDCOMMITMENTSADDITIONALINFORMATIONDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#CONTINGENCIESANDCOMMITMENTSADDITIONALINFORMATIONDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/CONTINGENCIESANDCOMMITMENTSADDITIONALINFORMATIONDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_xray_CommitmentsAndContingenciesLineItems_01a015f3-adaa-7948-b56a-b7cdb62f03cb" xlink:href="xray-20260930.xsd#xray_CommitmentsAndContingenciesLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_CommitmentsAndContingenciesTable_01a015f3-adaa-7ed0-ab10-63d7c5c6c8b2" xlink:href="xray-20260930.xsd#xray_CommitmentsAndContingenciesTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_xray_CommitmentsAndContingenciesLineItems_01a015f3-adaa-7948-b56a-b7cdb62f03cb" xlink:to="loc_xray_CommitmentsAndContingenciesTable_01a015f3-adaa-7ed0-ab10-63d7c5c6c8b2" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseAxis_01a015f3-adaa-7316-8d99-de6c1e6ce092" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_LitigationCaseAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_xray_CommitmentsAndContingenciesTable_01a015f3-adaa-7ed0-ab10-63d7c5c6c8b2" xlink:to="loc_srt_LitigationCaseAxis_01a015f3-adaa-7316-8d99-de6c1e6ce092" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_01a015f3-adaa-7316-8d99-de6c1e6ce092_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_LitigationCaseAxis_01a015f3-adaa-7316-8d99-de6c1e6ce092" xlink:to="loc_srt_LitigationCaseTypeDomain_01a015f3-adaa-7316-8d99-de6c1e6ce092_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_LitigationCaseTypeDomain_01a015f3-adaa-759e-9722-8437428825a7" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_LitigationCaseTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_LitigationCaseAxis_01a015f3-adaa-7316-8d99-de6c1e6ce092" xlink:to="loc_srt_LitigationCaseTypeDomain_01a015f3-adaa-759e-9722-8437428825a7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_MrCarloGobbettiLitigationMember_01a015f3-adaa-7bd8-933c-12f7edd8f637" xlink:href="xray-20260930.xsd#xray_MrCarloGobbettiLitigationMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_LitigationCaseTypeDomain_01a015f3-adaa-759e-9722-8437428825a7" xlink:to="loc_xray_MrCarloGobbettiLitigationMember_01a015f3-adaa-7bd8-933c-12f7edd8f637" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01a161b4-218c-7964-b322-63b0cdb4ba1e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_xray_CommitmentsAndContingenciesTable_01a015f3-adaa-7ed0-ab10-63d7c5c6c8b2" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01a161b4-218c-7964-b322-63b0cdb4ba1e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a161b4-218c-7964-b322-63b0cdb4ba1e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a161b4-218c-7964-b322-63b0cdb4ba1e" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a161b4-218c-7964-b322-63b0cdb4ba1e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a161b4-218c-7344-8be4-2eec2909a305" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a161b4-218c-7964-b322-63b0cdb4ba1e" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a161b4-218c-7344-8be4-2eec2909a305" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_01a161b4-5295-7e24-80d5-ad932df69e48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_01a161b4-218c-7344-8be4-2eec2909a305" xlink:to="loc_us-gaap_SubsequentEventMember_01a161b4-5295-7e24-80d5-ad932df69e48" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_01a17da3-2b3c-72e8-8e71-d94aa915bbb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_xray_CommitmentsAndContingenciesLineItems_01a015f3-adaa-7948-b56a-b7cdb62f03cb" xlink:to="loc_us-gaap_LitigationSettlementAmountAwardedToOtherParty_01a17da3-2b3c-72e8-8e71-d94aa915bbb5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyAccrualAtCarryingValue_01a17da3-2b3c-7135-8b94-6e6000ecf510" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyAccrualAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_xray_CommitmentsAndContingenciesLineItems_01a015f3-adaa-7948-b56a-b7cdb62f03cb" xlink:to="loc_us-gaap_LossContingencyAccrualAtCarryingValue_01a17da3-2b3c-7135-8b94-6e6000ecf510" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LossContingencyDamagesSoughtValue_01a015f3-adaa-7169-a943-bec48fa26fee" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LossContingencyDamagesSoughtValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_xray_CommitmentsAndContingenciesLineItems_01a015f3-adaa-7948-b56a-b7cdb62f03cb" xlink:to="loc_us-gaap_LossContingencyDamagesSoughtValue_01a015f3-adaa-7169-a943-bec48fa26fee" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EscrowDeposit_01a015f3-adaa-7d1f-ba6b-4799a8b65d4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EscrowDeposit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_xray_CommitmentsAndContingenciesLineItems_01a015f3-adaa-7948-b56a-b7cdb62f03cb" xlink:to="loc_us-gaap_EscrowDeposit_01a015f3-adaa-7d1f-ba6b-4799a8b65d4a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_xray_LossContingencyPunitiveDamagesSought_01a015f3-adaa-7ec6-9879-b09215a1933c" xlink:href="xray-20260930.xsd#xray_LossContingencyPunitiveDamagesSought"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_xray_CommitmentsAndContingenciesLineItems_01a015f3-adaa-7948-b56a-b7cdb62f03cb" xlink:to="loc_xray_LossContingencyPunitiveDamagesSought_01a015f3-adaa-7ec6-9879-b09215a1933c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralPartnerDistributions_01a015f3-adaa-7d12-8e73-4e19854a808c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GeneralPartnerDistributions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_xray_CommitmentsAndContingenciesLineItems_01a015f3-adaa-7948-b56a-b7cdb62f03cb" xlink:to="loc_us-gaap_GeneralPartnerDistributions_01a015f3-adaa-7d12-8e73-4e19854a808c" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.denstplysirona.com/role/SUBSEQUENTEVENTSDetails" xlink:type="simple" xlink:href="xray-20260930.xsd#SUBSEQUENTEVENTSDetails"/>
  <link:definitionLink xlink:role="http://www.denstplysirona.com/role/SUBSEQUENTEVENTSDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_01a015f3-adaa-7901-9707-28fcafda2aad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_01a015f3-adaa-7bfa-82b5-34dd5029e30a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a015f3-adaa-7901-9707-28fcafda2aad" xlink:to="loc_us-gaap_SubsequentEventTable_01a015f3-adaa-7bfa-82b5-34dd5029e30a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a13ee6-4816-7883-a7e5-a680e3db3ed3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_01a015f3-adaa-7bfa-82b5-34dd5029e30a" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a13ee6-4816-7883-a7e5-a680e3db3ed3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a13ee6-4816-7883-a7e5-a680e3db3ed3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a13ee6-4816-7883-a7e5-a680e3db3ed3" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a13ee6-4816-7883-a7e5-a680e3db3ed3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_HedgingRelationshipDomain_01a13ee6-4816-775a-b416-dc0de7870c83" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_HedgingRelationshipDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis_01a13ee6-4816-7883-a7e5-a680e3db3ed3" xlink:to="loc_us-gaap_HedgingRelationshipDomain_01a13ee6-4816-775a-b416-dc0de7870c83" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetInvestmentHedgingMember_01a13ee6-7dae-7f93-a3a7-fea43e98780f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetInvestmentHedgingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingRelationshipDomain_01a13ee6-4816-775a-b416-dc0de7870c83" xlink:to="loc_us-gaap_NetInvestmentHedgingMember_01a13ee6-7dae-7f93-a3a7-fea43e98780f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_01a13ee6-a25d-7c20-980e-3b16c44962c2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_01a015f3-adaa-7bfa-82b5-34dd5029e30a" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_01a13ee6-a25d-7c20-980e-3b16c44962c2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a13ee6-a25d-7c20-980e-3b16c44962c2_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a13ee6-a25d-7c20-980e-3b16c44962c2" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a13ee6-a25d-7c20-980e-3b16c44962c2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_01a13ee6-a25d-796f-90a9-12dd0a9a352e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_01a13ee6-a25d-7c20-980e-3b16c44962c2" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_01a13ee6-a25d-796f-90a9-12dd0a9a352e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_01a13ee6-bbf7-7ae6-bd30-e8b21157d876" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_01a13ee6-a25d-796f-90a9-12dd0a9a352e" xlink:to="loc_us-gaap_SubsequentEventMember_01a13ee6-bbf7-7ae6-bd30-e8b21157d876" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeNotionalAmount_01a13ee5-02d7-70c3-bb76-b96a54a6d9a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeNotionalAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a015f3-adaa-7901-9707-28fcafda2aad" xlink:to="loc_us-gaap_DerivativeNotionalAmount_01a13ee5-02d7-70c3-bb76-b96a54a6d9a1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForHedgeInvestingActivities_01a1443c-3116-7e0a-b7bc-f6da0dbd1253" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForHedgeInvestingActivities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_01a015f3-adaa-7901-9707-28fcafda2aad" xlink:to="loc_us-gaap_PaymentsForHedgeInvestingActivities_01a1443c-3116-7e0a-b7bc-f6da0dbd1253" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="simple" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-roles-2026.xsd#eedm1"/>
  <link:definitionLink xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_OtherAssetsNoncurrent" xlink:type="arc" order="101"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AssetsAbstract" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:type="arc" order="102"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAbstract" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent" xlink:type="arc" order="31"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LiabilitiesAbstract" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent" xlink:type="arc" order="32"/>
  </link:definitionLink>
</link:linkbase>
