Pronunciation: (ī'u-dīn", -din; in Chem. also ī'u-dēn"), [key]
n. Chem.
a nonmetallic halogen element occurring at ordinary temperatures as a grayish-black crystalline solid that sublimes to a dense violet vapor when heated: used in medicine as an antiseptic. Symbol: I; at. wt.: 126.904; at. no.: 53; sp. gr.: (solid) 4.93 at 20°C. Also,i•o•dinPronunciation: (ī'u-din). [key]

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

iodinateiodine 131
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