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nitrous acid

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noun Chemistry.
  1. an acid, HNO2, known only in solution.
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Origin of nitrous acid

First recorded in 1670–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for nitrous acid

nitrous acid

noun
  1. a weak monobasic acid known only in solution and in the form of nitrite salts. Formula: HNO 2Systematic name: dioxonitric(III) acid
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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
nitrous acid in Medicine

nitrous acid

n.
  1. A weak inorganic acid existing only in solution or in the form of its salts.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
nitrous acid in Science

nitrous acid

  1. A weak inorganic acid existing only in solution or in the form of its salts. It can act either as an oxidizing agent or as a reducing agent. Chemical formula: HNO2.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.