<?xml version="1.0" encoding="UTF-8"?>
<!-- Generated by Fujitsu Interstage XWand B0254 -->
<!-- Generated by Broadridge Financial Solutions Inc -->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:tsr="http://tsr/20260731" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink">
  <link:roleRef roleURI="http://xbrl.sec.gov/oef/role/Defaults" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#Defaults"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ShareholderReport" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ShareholderReport"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/oef/role/ClassOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#ClassOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#BroadBasedIndexOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#AdditionalIndexOnly"/>
  <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: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/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: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:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/ClassOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_C000024372Member" xlink:label="C000024372Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000024372Member" order="1.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_C000024374Member" xlink:label="C000024374Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000024374Member" order="2.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_C000081533Member" xlink:label="C000081533Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000081533Member" order="3.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_C000024375Member" xlink:label="C000024375Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000024375Member" order="4.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_C000118995Member" xlink:label="C000118995Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000118995Member" order="5.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/BroadBasedIndexOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_BroadBasedIndexDomain" xlink:label="BroadBasedIndexDomain"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202412245078_8109Member" xlink:label="bench202412245078_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BroadBasedIndexDomain" xlink:to="bench202412245078_8109Member" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202412245078_8111Member" xlink:label="bench202412245078_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BroadBasedIndexDomain" xlink:to="bench202412245078_8111Member" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202412245078_8110Member" xlink:label="bench202412245078_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BroadBasedIndexDomain" xlink:to="bench202412245078_8110Member" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202412245078_8113Member" xlink:label="bench202412245078_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BroadBasedIndexDomain" xlink:to="bench202412245078_8113Member" order="6.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202412245078_8112Member" xlink:label="bench202412245078_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="BroadBasedIndexDomain" xlink:to="bench202412245078_8112Member" order="6.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/oef/role/AdditionalIndexOnly">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/oef/2026/oef-2026.xsd#oef_AdditionalIndexDomain" xlink:label="AdditionalIndexDomain"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_benchmarkBMLM0247_8109Member" xlink:label="benchmarkBMLM0247_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="benchmarkBMLM0247_8109Member" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_benchmarkBMLM0247_8111Member" xlink:label="benchmarkBMLM0247_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="benchmarkBMLM0247_8111Member" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_benchmarkBMLM0247_8110Member" xlink:label="benchmarkBMLM0247_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="benchmarkBMLM0247_8110Member" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_benchmarkBMLM0247_8113Member" xlink:label="benchmarkBMLM0247_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="benchmarkBMLM0247_8113Member" order="7.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_benchmarkBMLM0247_8112Member" xlink:label="benchmarkBMLM0247_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="AdditionalIndexDomain" xlink:to="benchmarkBMLM0247_8112Member" order="7.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://fasb.org/srt/role/srt-eedm/ExtensibleEnumerationLists">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InvestmentTypeCategorizationMember" xlink:label="InvestmentTypeCategorizationMember"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102488_8109Member" xlink:label="bench202407102488_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102488_8109Member" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033979_8109Member" xlink:label="bench202409033979_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033979_8109Member" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033975_8109Member" xlink:label="bench202409033975_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033975_8109Member" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033974_8109Member" xlink:label="bench202409033974_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033974_8109Member" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033972_8109Member" xlink:label="bench202409033972_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033972_8109Member" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033976_8109Member" xlink:label="bench202409033976_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033976_8109Member" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033973_8109Member" xlink:label="bench202409033973_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033973_8109Member" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033984_8109Member" xlink:label="bench202409033984_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033984_8109Member" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033978_8109Member" xlink:label="bench202409033978_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033978_8109Member" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033977_8109Member" xlink:label="bench202409033977_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033977_8109Member" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033980_8109Member" xlink:label="bench202409033980_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033980_8109Member" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033981_8109Member" xlink:label="bench202409033981_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033981_8109Member" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033983_8109Member" xlink:label="bench202409033983_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033983_8109Member" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033982_8109Member" xlink:label="bench202409033982_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033982_8109Member" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033985_8109Member" xlink:label="bench202409033985_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033985_8109Member" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102502_8109Member" xlink:label="bench202407102502_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102502_8109Member" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202408073416_8109Member" xlink:label="bench202408073416_8109Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202408073416_8109Member" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102488_8111Member" xlink:label="bench202407102488_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102488_8111Member" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033979_8111Member" xlink:label="bench202409033979_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033979_8111Member" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033975_8111Member" xlink:label="bench202409033975_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033975_8111Member" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033974_8111Member" xlink:label="bench202409033974_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033974_8111Member" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033972_8111Member" xlink:label="bench202409033972_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033972_8111Member" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033976_8111Member" xlink:label="bench202409033976_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033976_8111Member" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033973_8111Member" xlink:label="bench202409033973_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033973_8111Member" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033984_8111Member" xlink:label="bench202409033984_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033984_8111Member" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033978_8111Member" xlink:label="bench202409033978_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033978_8111Member" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033977_8111Member" xlink:label="bench202409033977_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033977_8111Member" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033980_8111Member" xlink:label="bench202409033980_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033980_8111Member" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033981_8111Member" xlink:label="bench202409033981_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033981_8111Member" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033983_8111Member" xlink:label="bench202409033983_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033983_8111Member" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033982_8111Member" xlink:label="bench202409033982_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033982_8111Member" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033985_8111Member" xlink:label="bench202409033985_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033985_8111Member" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102502_8111Member" xlink:label="bench202407102502_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102502_8111Member" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202408073416_8111Member" xlink:label="bench202408073416_8111Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202408073416_8111Member" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102488_8110Member" xlink:label="bench202407102488_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102488_8110Member" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033979_8110Member" xlink:label="bench202409033979_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033979_8110Member" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033975_8110Member" xlink:label="bench202409033975_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033975_8110Member" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033974_8110Member" xlink:label="bench202409033974_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033974_8110Member" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033972_8110Member" xlink:label="bench202409033972_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033972_8110Member" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033976_8110Member" xlink:label="bench202409033976_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033976_8110Member" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033973_8110Member" xlink:label="bench202409033973_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033973_8110Member" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033984_8110Member" xlink:label="bench202409033984_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033984_8110Member" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033978_8110Member" xlink:label="bench202409033978_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033978_8110Member" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033977_8110Member" xlink:label="bench202409033977_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033977_8110Member" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033980_8110Member" xlink:label="bench202409033980_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033980_8110Member" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033981_8110Member" xlink:label="bench202409033981_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033981_8110Member" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033983_8110Member" xlink:label="bench202409033983_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033983_8110Member" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033982_8110Member" xlink:label="bench202409033982_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033982_8110Member" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033985_8110Member" xlink:label="bench202409033985_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033985_8110Member" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102502_8110Member" xlink:label="bench202407102502_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102502_8110Member" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202408073416_8110Member" xlink:label="bench202408073416_8110Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202408073416_8110Member" order="25.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102488_8113Member" xlink:label="bench202407102488_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102488_8113Member" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033979_8113Member" xlink:label="bench202409033979_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033979_8113Member" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033975_8113Member" xlink:label="bench202409033975_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033975_8113Member" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033974_8113Member" xlink:label="bench202409033974_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033974_8113Member" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033972_8113Member" xlink:label="bench202409033972_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033972_8113Member" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033976_8113Member" xlink:label="bench202409033976_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033976_8113Member" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033973_8113Member" xlink:label="bench202409033973_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033973_8113Member" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033984_8113Member" xlink:label="bench202409033984_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033984_8113Member" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033978_8113Member" xlink:label="bench202409033978_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033978_8113Member" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033977_8113Member" xlink:label="bench202409033977_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033977_8113Member" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033980_8113Member" xlink:label="bench202409033980_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033980_8113Member" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033981_8113Member" xlink:label="bench202409033981_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033981_8113Member" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033983_8113Member" xlink:label="bench202409033983_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033983_8113Member" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033982_8113Member" xlink:label="bench202409033982_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033982_8113Member" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033985_8113Member" xlink:label="bench202409033985_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033985_8113Member" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102502_8113Member" xlink:label="bench202407102502_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102502_8113Member" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202408073416_8113Member" xlink:label="bench202408073416_8113Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202408073416_8113Member" order="24.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102488_8112Member" xlink:label="bench202407102488_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102488_8112Member" order="8.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033979_8112Member" xlink:label="bench202409033979_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033979_8112Member" order="9.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033975_8112Member" xlink:label="bench202409033975_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033975_8112Member" order="10.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033974_8112Member" xlink:label="bench202409033974_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033974_8112Member" order="11.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033972_8112Member" xlink:label="bench202409033972_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033972_8112Member" order="12.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033976_8112Member" xlink:label="bench202409033976_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033976_8112Member" order="13.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033973_8112Member" xlink:label="bench202409033973_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033973_8112Member" order="14.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033984_8112Member" xlink:label="bench202409033984_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033984_8112Member" order="15.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033978_8112Member" xlink:label="bench202409033978_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033978_8112Member" order="16.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033977_8112Member" xlink:label="bench202409033977_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033977_8112Member" order="17.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033980_8112Member" xlink:label="bench202409033980_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033980_8112Member" order="18.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033981_8112Member" xlink:label="bench202409033981_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033981_8112Member" order="19.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033983_8112Member" xlink:label="bench202409033983_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033983_8112Member" order="20.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033982_8112Member" xlink:label="bench202409033982_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033982_8112Member" order="21.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202409033985_8112Member" xlink:label="bench202409033985_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202409033985_8112Member" order="22.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202407102502_8112Member" xlink:label="bench202407102502_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202407102502_8112Member" order="23.0"/>
    <link:loc xlink:type="locator" xlink:href="tsr-20260731.xsd#tsr_bench202408073416_8112Member" xlink:label="bench202408073416_8112Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="InvestmentTypeCategorizationMember" xlink:to="bench202408073416_8112Member" order="24.0"/>
  </link:definitionLink>
</link:linkbase>
