| Abbreviation | Definition |
|---|---|
| PF | primary follicle |
| PF | primordial follicle |
| PF | profile |
| PF | proliferative fraction |
| PF | protection factor |
| PF | proximal femur |
| PF | pterygoid fossa |
| PF | pulmonary function |
| PF | pulsed field |
| PF | Purkinje fibre |
| PF | push fluid |
| PFI | portal flow index |
| PFI | progression-free interval |
| PFI | pulsatile flow index |
| PfIT | Programme for IT (National Programme for IT) |
| PFO | perfluorooctane |
| PFO | pissed, fell over |
| PFT | pancreatic function test |
| PFT | permit free training |
| PFT | plexiform fibrohistiocytic tumour |