iodine-131(redirected from I-131)
Also found in: Thesaurus, Medical, Encyclopedia.
Switch to new thesaurus
|Noun||1.||iodine-131 - 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|
radioisotope - a radioactive isotope of an element; produced either naturally or artificially