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phosphoric acid

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noun Chemistry.
any of three acids, orthophosphoric acid, H3PO4, metaphosphoric acid, HPO3, or pyrophosphoric acid, H4P2O7, derived from phosphorus pentoxide, P2O5, and various amounts of water.
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Origin of phosphoric acid

First recorded in 1785–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use phosphoric acid in a sentence

British Dictionary definitions for phosphoric acid

phosphoric acid

noun
Also called: orthophosphoric acid a colourless solid tribasic acid used in the manufacture of fertilizers and soap. Formula: H 3 PO 4Systematic name: phosphoric(V) acid
any oxyacid of phosphorus produced by reaction between phosphorus pentoxide and waterSee 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

Scientific definitions for phosphoric acid

phosphoric acid
[ fŏs-fôrĭk ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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