phosphorous acid

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phosphorous acid

n.
A white or yellowish hygroscopic crystalline solid, H3PO3, used as a reducing agent and to produce phosphite salts.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

phosphorous acid

n
1. (Elements & Compounds) Also called: orthophosphorous acid a white or yellowish hygroscopic crystalline dibasic acid. Formula: H3PO3. Systematic name: phosphoric acid
2. (Elements & Compounds) any oxyacid of phosphorus containing less oxygen than the corresponding phosphoric acid
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

phospho′rous ac′id


n.
a colorless, crystalline, water-soluble acid of phosphorus, H3PO3, from which phosphites are derived.
[1785–95]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.phosphorous acid - a clear or yellow monobasic acid (H3PO2)
oxyacid, oxygen acid - any acid that contains oxygen
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