contrast medium

noun

: a substance (as a solution of iodine or suspension of barium sulfate) comparatively opaque to X-rays that is introduced into the body (as by injection or swallowing) to contrast an internal part (as the gastrointestinal tract, kidneys, or blood vessels) with its surrounding tissue in radiographic visualization

called also contrast agent, contrast material

Dictionary Entries Near contrast medium

Cite this Entry

“Contrast medium.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/contrast%20medium. Accessed 13 Oct. 2024.

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