| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
|---|---|
| HEPA | high-efficiency particulate air [filter] |
| PC | avoirdupois weight [Lat. pondus civile]; packed cells; paper chromatography; paracortex; parent cell... |
| POC | particulate organic carbon; point of care; postoperative care; probability of chance; product of con... |
| PON | paraoxonase; particulate organic nitrogen |