triphosphoric acid: Meaning and Definition of

tri'phos•phor'ic ac'id

Pronunciation: (trī'fos-fôr'ik, -for'-, trī"-), [key]
— Chem. Chem.
  1. the hypothetical acid HPO, known chiefly by its salts.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.