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phosphoric acid

noun, Chemistry.
any of three acids, orthophosphoric acid, H 3 PO 4 , metaphosphoric acid, HPO 3 , or pyrophosphoric acid, H 4 P 2 O 7 , derived from phosphorus pentoxide, P 2 O 5 , and various amounts of water.
Origin of phosphoric acid
1785-95 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for phosphoric-acid

phosphoric acid

Also called orthophosphoric acid. a colourless solid tribasic acid used in the manufacture of fertilizers and soap. Formula: H3PO4 Systematic name phosphoric(V) acid
any oxyacid of phosphorus produced by reaction between phosphorus pentoxide and water See also metaphosphoric acid, pyrophosphoric acid, hypophosphoric acid
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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phosphoric-acid in Medicine

phosphoric acid phos·phor·ic acid (fŏs-fôr'ĭk)
A clear colorless liquid used in pharmaceuticals. Also called orthophosphoric 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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phosphoric-acid in Science
phosphoric acid
A clear liquid, or a solid that forms colorless, rhombus-shaped crystals, that is used in fertilizers, detergents, food flavoring, and pharmaceuticals. Chemical formula: H3PO4.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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