radioiodine

American

[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.

Etymology

Origin of radioiodine

First recorded in 1935–40; radio- + iodine

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The American Cancer Society says thyroid cancer can be detected early through a variety of medical exams, including annual physicals, medical history analyses, image and blood tests, ultrasound and radioiodine scans.

From Fox News • Sep. 14, 2021

From a bone scan that detects a cancer to a radioiodine treatment that cures another, nuclear radiation has many diagnostic and therapeutic applications in medicine.

From Textbooks • Aug. 12, 2015

Most of these cases were caused by drinking milk contaminated with radioiodine.

From Nature • Mar. 30, 2011

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023