contrast medium
noun Medicine/Medical.
a radiopaque substance injected into a part of the body, as the stomach or duodenum, to provide a contrasting background for the tissues in an x-ray or fluoroscopic examination.
Nearby words
contras, contrasexual, contrast, contrast bath, contrast enema, contrast medium, contrast stain, contrastive, contrastive stress, contrasty, contrasuggestible
Origin of contrast medium
First recorded in 1950–55
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British Dictionary definitions for contrast medium
contrast medium
noun
med a radiopaque substance, such as barium sulphate, used to increase the contrast of an image in radiography
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Medicine definitions for contrast medium
contrast medium
n.
A substance, such as barium or air, used in radiography to increase the contrast of an image. A positive contrast medium absorbs x-rays more strongly than the tissue or structure being examined; a negative contrast medium, less strongly.contrast agent
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for contrast medium
contrast medium
[ kŏn′trăst′ ]
A substance, such as barium or air, used in radiologic studies to increase the contrast of an image. In x-ray imaging, a positive contrast medium absorbs x-rays more strongly than the tissue or structure being examined; a negative contrast medium, less strongly.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.