CONTRAST MATERIAL

 I. (noun) 

Sense 1

Meaning:

A substance that is opaque to x-rays; when administered it allows a radiologist to examine the organ or tissue it fills

Synonyms:

contrast material; contrast medium

Classified under:

Nouns denoting substances

Hypernyms ("contrast material" is a kind of...):

medium ((biology) a substance in which specimens are preserved or displayed)

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