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isocyanic acid

[ahy-soh-sahy-an-ik, ahy-soh-]
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noun Chemistry.
  1. an unstable acid, CHNO, tautomeric with cyanic acid, known only in the form of its salts.
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Origin of isocyanic acid

First recorded in 1890–95; iso- + cyanic acid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for isocyanic acid

isocyanic acid

noun
  1. a hypothetical acid known only in the form of its compounds. Formula: HNCO
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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