phosphoric acid

phosphoric acid

noun

Definition of PHOSPHORIC ACID

1

: a syrupy or deliquescent tribasic acid H₃PO₄ used especially in preparing phosphates (as for fertilizers), in rust-proofing metals, and especially formerly as a flavoring in soft drinks—called also orthophosphoric acid

2

: a compound (as pyrophosphoric acid or metaphosphoric acid) consisting of phosphate groups linked directly to each other by oxygen