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Definition of Iodine
1. Noun. 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).
Generic synonyms: Chemical Element, Element, Halogen
Specialized synonyms: Iodine-131, Iodine-125
Substance meronyms: Brine, Saltwater, Seawater
Derivative terms: Iodinate, Iodise, Iodize
2. Noun. A tincture consisting of a solution of iodine in ethyl alcohol; applied topically to wounds as an antiseptic.
Definition of Iodine
1. n. A nonmetallic element, of the halogen group, occurring always in combination, as in the iodides. When isolated it is in the form of dark gray metallic scales, resembling plumbago, soft but brittle, and emitting a chlorinelike odor. Symbol I. Atomic weight 126.5. If heated, iodine volatilizes in beautiful violet vapors.
Definition of Iodine
1. Noun. A chemical element (''symbol'': I) with an atomic number of 53; one of the halogens. ¹
2. Noun. An antiseptic incorporating the element. ¹
3. Noun. (countable uncountable obsolete) An iodide. ¹
¹ Source: wiktionary.com
Definition of Iodine
1. a nonmetallic element [n -S]
Medical Definition of Iodine
1.