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potassium cyanide

noun

Chemistry.

  1. a white, granular, water-soluble, poisonous powder, KCN, having a faint almondlike odor, used chiefly in metallurgy and photography.

potassium cyanide

noun

  1. a white poisonous granular soluble solid substance used in photography and in extracting gold from its ores. Formula: KCN

“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 potassium cyanide1

First recorded in 1880–85

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potassium cobaltinitritepotassium dichromate

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