io·dine
n, often attrib 1 : a nonmetallic halogen element obtained usu. as heavy shining blackish gray crystals and used esp. in medicine (as in antisepsis and in the treatment of goiter and cretinism) and in photography and chemical analysis - symbol I - see ELEMENTtable 2 : a tincture of iodine used esp. as a topical antiseptic .
Similar sounding terms: iodine-131 iodine-125
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