<?xml version="1.0" encoding="UTF-8"?>
<!-- XBRL document created with DocuBuilder 4.7 by Data Communique, 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:columbia="http://columbia/20111012" 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/rr/role/Series" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#SeriesOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/Class" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#ClassOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/Prospectus" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#ProspectusOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/PerformanceTableData" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#PerformanceTableData"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/ExpenseExample" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#ExpenseExample"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/OperatingExpensesData" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#OperatingExpensesData"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/ShareholderFeesData" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#ShareholderFeesData"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/ExpenseExampleNoRedemption" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#ExpenseExampleNoRedemption"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/PerformanceMeasure" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#PerformanceMeasureOnly"/>
  <link:roleRef roleURI="http://xbrl.sec.gov/rr/role/RiskReturnDetailData" xlink:type="simple" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#RiskReturnDetailData"/>
  <link:roleRef roleURI="http://columbia/role/ExpenseExampleAAAA" xlink:type="simple" xlink:href="cik0001097519-2012110101.xsd#ExpenseExampleAAAA"/>
  <link:roleRef roleURI="http://columbia/role/OperatingExpensesDataAAAA" xlink:type="simple" xlink:href="cik0001097519-2012110101.xsd#OperatingExpensesDataAAAA"/>
  <link:roleRef roleURI="http://columbia/role/ShareholderFeesDataAAAA" xlink:type="simple" xlink:href="cik0001097519-2012110101.xsd#ShareholderFeesDataAAAA"/>
  <link:roleRef roleURI="http://columbia/role/ExpenseExampleNoRedemptionAAAA" xlink:type="simple" xlink:href="cik0001097519-2012110101.xsd#ExpenseExampleNoRedemptionAAAA"/>
  <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/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-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/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:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/RiskReturnDetailData">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#rr_RiskReturnAbstract" xlink:label="RiskReturnAbstract"/>
    <link:loc xlink:type="locator" xlink:href="cik0001097519-2012110101.xsd#columbia_SupplementTextBlock" xlink:label="columbia_SupplementTextBlock"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="RiskReturnAbstract" xlink:to="columbia_SupplementTextBlock" priority="1" order="10.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/Prospectus">
    <link:loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_DocumentDomain" xlink:label="DocumentDomain"/>
    <link:loc xlink:type="locator" xlink:href="cik0001097519-2012110101.xsd#columbia_AAAAMember" xlink:label="AAAAMember"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="DocumentDomain" xlink:to="AAAAMember" use="optional" order="2.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/Series">
    <link:loc xlink:type="locator" xlink:href="http://taxonomies.xbrl.us/us-gaap/2009/non-gaap/dei-2009-01-31.xsd#dei_EntityDomain" xlink:label="EntityDomain"/>
    <link:loc xlink:type="locator" xlink:href="cik0001097519-2012110101.xsd#columbia_S000010792Member" xlink:label="S000010792Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="EntityDomain" xlink:to="S000010792Member" order="2.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/Class">
    <link:loc xlink:type="locator" xlink:href="http://xbrl.sec.gov/rr/2010/rr-2010-02-28.xsd#rr_ShareClassDomain" xlink:label="ShareClassDomain"/>
    <link:loc xlink:type="locator" xlink:href="cik0001097519-2012110101.xsd#columbia_C000079026Member" xlink:label="C000079026Member"/>
    <link:definitionArc xlink:type="arc" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="ShareClassDomain" xlink:to="C000079026Member" order="2.0"/>
  </link:definitionLink>
  <link:definitionLink xlink:type="extended" xlink:role="http://xbrl.sec.gov/rr/role/PerformanceMeasure"/>
</link:linkbase>
