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iodine, I, iodin, 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) | |
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tincture of iodine, iodine | a tincture consisting of a solution of iodine in ethyl alcohol; applied topically to wounds as an antiseptic |