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Definition of Pyrophosphoric acid
1. Noun. A solid acid formed by reactions of orthophosphoric acid.
Generic synonyms: Polyphosphoric Acid
Definition of Pyrophosphoric acid
1. Noun. A syrupy liquid formed by the dehydration of phosphoric acid; its salts, the pyrophosphates, are used in medicine. ¹
2. Noun. (inorganic compound) The acid formed by removing a molecule of water from two molecules of phosphoric acid, H4P2O7; this reaction slowly reverses in the presence of water. ¹
¹ Source: wiktionary.com