<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>The action of repeating the qualification or reconfirming that a person, process, product or piece of equipment is suitable for a particular postition or task.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>