prussic acid

noun Chemistry.

Origin:
1780–90; translation of French acide prussique (equivalent to Prusse Prussia + -ique -ic); so called because it was first obtained by heating Prussian blue with sulfuric acid

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World English Dictionary
prussic acid (ˈprʌsɪk)
 
n
the weakly acidic extremely poisonous aqueous solution of hydrogen cyanide
 
[C18: from French acide prussique Prussian acid, so called because obtained from Prussian blue]

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American Heritage
Medical Dictionary

prussic acid prus·sic acid (prŭs'ĭk)
n.
See hydrocyanic 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
prussic acid   (prŭs'ĭk)  Pronunciation Key 
See hydrocyanic acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Commercial solutions for treatment of prussic acid poisoning are available.
To reduce the risk of prussic acid poisoning, do not turn hungry animals into suspect pasture.
Plant growth stage, plus environmental and management factors, affect nitrate and prussic acid concentrations in foliage.
During drought years milo stalks can contain prussic acid, which is fatal to cattle.
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