pp -abbr
- pages
- per person
- by proxy
- pianissimo
PP -abbr
- parcel post
- postpaid
- prepaid
ppb -abbr
- parts per billion
ppd -abbr
- postpaid
- prepaid
PPI -abbr
- plan position indicator
ppm -abbr
- pages per minute
- parts per million
PPO [,pē-(,)pē-'ō] -n
- an organization providing health care that gives economic incentives to the individual purchaser of a health-care contract to patronize certain physicians, laboratories, and hospitals that agree to supervision and reduced fees
PPS -abbr
- an additional postscript
ppt -abbr
- parts per thousand
- parts per trillion
- precipitate
PPV -abbr
- pay-per-view