Meaning of phosphoric acid

phosphor'ic ac'id

Pronunciation: [key]
— Chem. Chem.
  1. any of three acids, orthophosphoric acid, HPO, metaphosphoric acid, HPO, or pyrophosphoric acid, HPO, derived from phosphorus pentoxide, PO, and various amounts of water.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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