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Wiktionary
orthophosphoric acid

n. (context inorganic compound English) Ordinary phosphoric acid, H3PO4

WordNet
orthophosphoric acid

n. an acid used in fertilizers and soaps: H3PO4 [syn: phosphoric acid]

Usage examples of "orthophosphoric acid".

It eats ordinary dirt and rock and breathes air and sweats orthophosphoric acid.