Dictionary
met'a•phos•phor'ic ac'id
Pronunciation: (met"u-fos-fôr'ik, -for'-), [key] Chem.
an acid, HPO
3, derived from phosphorous pentoxide, and containing the smallest amount of water of the phosphoric acids. Cf.
phosphoric acid. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.