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orthophosphate

[awr-thuh-fos-feyt]
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noun Chemistry.
  1. a salt or ester of orthophosphoric acid, or any compound containing the trivalent group −PO4.
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Origin of orthophosphate

First recorded in 1855–60; ortho- + phosphate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for orthophosphate

orthophosphate

noun
  1. any salt or ester of orthophosphoric 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