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cyanogen

[sahy-an-uh-juh n, -jen]
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noun
  1. a colorless, poisonous, flammable, water-soluble gas, C2N2, having an almondlike odor: used chiefly in organic synthesis.
  2. cyano group.
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Origin of cyanogen

First recorded in 1820–30; cyano-1 + -gen
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for cyanogen

cyanogen

noun
  1. an extremely poisonous colourless flammable gas with an almond-like odour: has been used in chemical warfare. Formula: (CN) 2
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Word Origin

C19: from French cyanogène; see cyano-, -gen; so named because it is one of the constituents of Prussian blue
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