hydrocyanic acid

noun
a colorless, highly poisonous liquid, HCN, an aqueous solution of hydrogen cyanide.
Also called prussic acid.


Origin:
1810–20

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Collins
World English Dictionary
hydrocyanic acid (ˌhaɪdrəʊsaɪˈænɪk)
 
n
another name for hydrogen cyanide, esp when in aqueous solution

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

hydrocyanic acid hy·dro·cy·an·ic acid (hī'drō-sī-ān'ĭk)
n.
An aqueous solution of hydrogen cyanide that is a poisonous weak acid. Also called prussic acid.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
hydrocyanic acid   (hī'drō-sī-ān'ĭk)  Pronunciation Key 
An aqueous solution of hydrogen cyanide, having a characteristic smell of bitter almonds. Also called prussic acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The toxic substance in chokecherry, hydrocyanic acid, is found principally in the leaves.
The seeds are toxic due to production of hydrocyanic acid in the leaves, stems and seeds.
The leaves can also contain varying concentrations of hydrocyanic acid, which is poisonous to livestock.
Workers acutely exposed to cyanogen, which dissociates into hydrogen cyanide and hydrocyanic acid, experienced nasal irritation.
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