WordReference Random House Unabridged Dictionary of American English © 2026
met′a•phos•phor′ic ac′id
(met′ə fos fôr′ik, -for′-),USA pronunciation [Chem.]
- Chemistryan acid, HPO3, derived from phosphorous pentoxide, and containing the smallest amount of water of the phosphoric acids. Cf. phosphoric acid.
- meta- + phosphoric 1825–35
'metaphosphoric acid' also found in these entries (note: many are not synonyms or translations):