<n0:ComplexDefinition xmlns:n0="http://ncicb.nci.nih.gov/xml/owl/EVS/ComplexProperties.xsd#"><n0:def-definition>Contrast media that has a lower amplification and intensity than the surrounding tissue making the contrast look less opaque when seen in an x-ray.</n0:def-definition><n0:def-source>NCI</n0:def-source></n0:ComplexDefinition>