- 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.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for hydrocyanic acid
Historical Examples of 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.