Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun iodine-131

1 sense of iodine-131

Sense 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)
       => iodine, iodin, I, atomic number 53 -- (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))
       => radioisotope -- (a radioactive isotope of an element; produced either naturally or artificially)