[pahy-roh-fos-fawr-ik, -for-, pahy-]
a crystalline, water-soluble powder, H4P2O7, formed by the union of one molecule of phosphorus pentoxide with two molecules of water.
Origin of pyrophosphoric acid
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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
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.
A viscous liquid used as a catalyst and in the manufacture of organic chemicals. Chemical formula: H4P2O7.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.