py·ro·phos·phate 
(pī′rə-fŏsfāt′)
(pī′rə-fŏsfāt′)n.
A salt, ester, or anion of pyrophosphoric acid.
py′ro·phos·phatic (-fătĭk) adj.
- pull down
- pull-down menu
- pulldown menu
- puller
- pullet
- pulley
- pull in
- pullin horns
- pullin one's horns
- pull leg
- pullman
- Pullman
- Pullman
- pull off
- pull-on
- pull (oneself) together
- pull oneself together
- pull (one's) punches
- pull one's punches
- pull (one's) weight
- pull one's weight
- pullorum disease
- pull out
- pullout
- pull out all the stops