Pyrophosphoric
Pronunciation : Pyr`o*phos*phor"ic
Part of Speech : a.
Etymology : [Pyro- + phosphoric.] (Chem.)
Definition : Defn: Pertaining to, or designating, an acid, H4P2O7, which is obtained as a white crystalline substance. Its salts are obtained by heating the phosphates.
Source : Webster's Unabridged Dictionary, 1913