hydriodic

Hy`dri*od"ic, a. Etym: [Hydr- + iodic: cf. F. hydriodique.] (Chem.) Defn: Pertaining to, or derived from, hydrogen and iodine; -- said of an acid produced by the combination of these elements. Hydriodic acid (Chem.), a pungent, colorless gas, HI, usually prepared as a solution in water. It is strong reducing agent. Called also hydrogen iodine.

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