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hydrogen iodide

American  

noun

  1. a colorless gas, HI, having a suffocating odor: the anhydride of hydriodic acid.

hydrogen iodide British  

noun

  1. a colourless poisonous corrosive gas obtained by a catalysed reaction between hydrogen and iodine vapour: used in making iodides. Formula: HI

  2. an aqueous solution of this gas; hydriodic acid

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of hydrogen iodide

First recorded in 1895–1900

Example Sentences

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Officials told FOX 4 of Dallas/Fort Worth that the chemicals involved in the incident were methyl iodide, hydrogen iodide, and methyl acetate.

From Fox News

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.