Hypertext Webster Gateway: "pyrophosphoric"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Pyrophosphoric \Pyr`o*phos*phor"ic\, a. [Pyro- + phosphoric.]
(Chem.)
Pertaining to, or designating, an acid, {H4P2O7}, which is
obtained as a white crystalline substance. Its salts are
obtained by heating the phosphates.
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