phosphoric Definition

of, relating to, or containing phosphorus especially with a valence higher than in phosphorous compounds

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

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