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radioiodine

[rey-dee-oh-ahy-uh-dahyn, -din, -deen]
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noun Chemistry.
  1. 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. 2018

radioiodine in Medicine

radioiodine

(rā′dē-ō-īə-dīn′)
n.
  1. A radioactive isotope of iodine widely used as a tracer.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.