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))
tincture of iodine, iodine -- (a tincture consisting of a solution of iodine in ethyl alcohol; applied topically to wounds as an antiseptic)
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