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oxalic acid

noun, Chemistry.
a white, crystalline, water-soluble, poisonous acid, H 2 C 2 O 4 ⋅2H 2 O, first discovered in the juice of the wood sorrel species of oxalis and obtained by reacting carbon monoxide with sodium hydroxide or certain carbohydrates with acids or alkalis: used chiefly for bleaching, as a cleanser, and as a laboratory reagent.
Origin of oxalic acid
1785-95 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for oxalic-acid

oxalic acid

a colourless poisonous crystalline dicarboxylic acid found in many plants: used as a bleach and a cleansing agent for metals. Formula: (COOH)2 Systematic name ethanedioic acid
Word Origin
C18: from French oxalique, from Latin oxalis garden sorrel; see oxalis
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
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oxalic-acid in Medicine

oxalic acid ox·al·ic acid (ŏk-sāl'ĭk)
A poisonous crystalline organic acid found in many plants and used as an agent in chemical reduction.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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oxalic-acid in Science
oxalic acid
A poisonous, crystalline acid found in a number of plants such as sorrel and the leaf blades of rhubarb. It is used for many industrial purposes, including rust removal and bleaching. Chemical formula: C2H2O4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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