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prussic acid

noun, Chemistry
Origin
1780-1790
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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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for prussic-acid

prussic acid

/ˈprʌsɪk/
noun
1.
the weakly acidic extremely poisonous aqueous solution of hydrogen cyanide
Word Origin
C18: from French acide prussique Prussian acid, so called because obtained from Prussian blue
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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prussic-acid in Medicine

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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prussic-acid in Science
prussic acid
  (prŭs'ĭk)   
See hydrocyanic acid.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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