noun
heavy radioactive isotope of iodine with a half-life of 8 days; used in a sodium salt to diagnose thyroid disease and to treat goiter
• Hypernyms: ↑iodine, ↑iodin, ↑I, ↑atomic number 53, ↑radioisotope
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iodine-131 noun
A short-lived radioactive isotope of iodine present in fallout, widely used in medicine
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Main Entry: ↑iodine
Useful english dictionary. 2012.