[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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a crystalline soluble solid acid formed by the reaction between one molecule of phosphorus pentoxide and two water molecules. Formula: H 4 P 2 O 7See also polyphosphoric 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
- 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.