metaphosphoric Meaning, Definition & Usage

Met`a*phos*phor"ic adjective
Etymology
Pref. meta- + phosphoric.
Definitions
  1. (Chem.) Pertaining to, or designating, a monobasic acid, HPO3, analogous to nitric acid, and, by heating phosphoric acid, obtained as a crystalline substance, commonly called glacial phosphoric acid.

Webster 1913