[pahy-ruh-fos-feyt] /ˌpaɪ rəˈfɒs feɪt/

noun, Chemistry.
a salt or ester of .
any salt or ester of pyrophosphoric acid

pyrophosphate py·ro·phos·phate (pī’rə-fŏs’fāt’)
Abbr. PP
A salt or an ester of pyrophosphoric acid.
A salt or ester of pyrophosphoric acid, containing the group P2O7.


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