pyro-phosphoric acid

pyrophosphoric acid

[pahy-roh-fos-fawr-ik, -for-, pahy-]
noun Chemistry.
a crystalline, water-soluble powder, H 4 P 2 O 7 , formed by the union of one molecule of phosphorus pentoxide with two molecules of water.

1865–70; pyro- + phosphoric Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
pyrophosphoric acid (ˌpaɪrəʊfɒsˈfɒrɪk)
See also polyphosphoric acid a crystalline soluble solid acid formed by the reaction between one molecule of phosphorus pentoxide and two water molecules. Formula: H4P2O7

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

pyrophosphoric acid py·ro·phos·phor·ic acid (pī'rō-fŏs-fôr'ĭk)
A syrupy viscous liquid used as a catalyst, in organic chemical synthesis, and, in its salt forms, as medicines.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
pyrophosphoric acid   (pī'rō-fŏs-fôr'ĭk)  Pronunciation Key 
A viscous liquid used as a catalyst and in the manufacture of organic chemicals. Chemical formula: H4P2O7.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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