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IODINE-131
I. (noun)
Sense 1
Meaning:
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
Classified under:
Hypernyms ("iodine-131" is a kind of...):
radioisotope (a radioactive isotope of an element; produced either naturally or artificially)
atomic number 53; I; iodin; iodine (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))
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