iodine 131
noun Chemistry.
a radioactive isotope of iodine having a mass number 131 and a half-life of 8.6 days, used in the diagnosis and treatment of disorders of the thyroid gland.
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Words nearby iodine 131
iodic acid, iodide, iodimetry, iodinate, iodine, iodine 131, iodine stain, iodine-123, iodine-125, iodine-131, iodine-fast
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Medical definitions for iodine-131
iodine-131
n.
A radioisotope of iodine that emits beta and gamma rays, has a half-life of 8.05 days, and is used as a tracer in thyroid studies and as therapy in hyperthyroidism and thyroid cancer.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.