Webster's Revised Unabridged Dictionary · 1913

Hydriodic

Hydriodic , adjective

[Hydr- + iodic: compare French hydriodique.]

(Chemistry) Pertaining to, or derived from, hydrogen and iodine; -- said of an acid (HI) produced by the combination of these elements.
Collocations (1)
Hydriodic acid (Chemistry) , a pungent, colorless gas, HI, usually prepared as a solution in water. It is strong reducing agent. Called also hydrogen iodide.