radioiodine

[ rey-dee-oh-ahy-uh-dahyn, -din, -deen ]
/ ˌreɪ di oʊˈaɪ əˌdaɪn, -dɪn, -ˌdin /

noun Chemistry.

any of nine radioisotopes of iodine, especially iodine 131 and iodine 125, used as radioactive tracers in research and clinical diagnosis and treatment.

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Origin of radioiodine

First recorded in 1935–40; radio- + iodine
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for radioiodine

radioiodine
[ rā′dē-ō-īə-dīn′ ]

n.

A radioactive isotope of iodine widely used as a tracer.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.