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hydrogen iodide

noun

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


hydrogen iodide

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
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Word History and Origins

Origin of hydrogen iodide1

First recorded in 1895–1900
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Example Sentences

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

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hydrogen fluoridehydrogen ion