iodine-131
English Thesaurus
1. 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 (noun.substance)
| hypernym | : | radioisotope, |
| definition | : | a radioactive isotope of an element; produced either naturally or artificially (noun.substance) |
| hypernym | : | atomic number 53, i, iodin, iodine, |
| definition | : | a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks) (noun.substance) |
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