- a colorless, highly poisonous liquid, HCN, an aqueous solution of hydrogen cyanide.
Origin of hydrocyanic acid
First recorded in 1810–20
Also called prussic acid.
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Examples from the Web for hydrocyanic acid
- another name for hydrogen cyanide, esp when in aqueous solution
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
- An aqueous solution of hydrogen cyanide that is a poisonous weak acid.prussic acid
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- An aqueous solution of hydrogen cyanide, having a characteristic smell of bitter almonds. Also called prussic acid
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.