noun Chemistry.

a salt or ester of pyrophosphoric acid.

Origin of pyrophosphate

First recorded in 1830–40; pyrophosph(oric acid) + -ate2 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Historical Examples of pyrophosphate

British Dictionary definitions for pyrophosphate



any salt or ester of pyrophosphoric 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

Medicine definitions for pyrophosphate




A salt or ester of pyrophosphoric acid.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for pyrophosphate



A salt or ester of pyrophosphoric acid, containing the group P2O7.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.