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.
- teach
- Teach
- teachability
- teachable
- teachableness
- teachably
- teacher
- teacher bird
- teacherly
- teachers college
- teachers' college
- teacher's pet
- teach-in
- teaching
- teaching assistant
- teaching assistantship
- teaching fellow
- teaching hospital
- teaching machine
- teacup
- teacupful
- tea dance
- tea garden
- teahouse
- teak