Search Result for "pyrophosphate": 
Wordnet 3.0

NOUN (1)

1. a salt or ester of pyrophosphoric acid; 



The Collaborative International Dictionary of English v.0.48:

Pyrophosphate \Pyr"o*phos"phate\, n. (Chem.)
   A salt of pyrophosphoric acid.
   [1913 Webster]


WordNet (r) 3.0 (2006):

pyrophosphate
    n 1: a salt or ester of pyrophosphoric acid