| Abbreviation | Definition |
|---|---|
| PEP | phosphoenolpyruvate |
| PEP | population education program |
| PEP | positional expression profiling |
| PEP | pre-ejection period |
| PEP | protein eletrophoresis |
| PEP | psychiatric evaluation profile |
| PEP | psychoeducational profile |
| PEP/PLP | personal education plan/personal learning plan |
| PEPP | Pooled budget External Placement Panel |
| PEST | political, economic, social and technological |
| PET | Heeerrrrrreeee Kitty, Kitty, Kitty, Kitty |
| PET | pancreatic endocrine tumour |
| PETA | People for the Ethical Treatment of Animals (!) |
| PETS | Paediatric Emergency Transfer Service |
| PETS | This term got 57 hits on 23.10.2011, and thus may not be in active use. |
| PF | parafascicular |
| PF | parafollicular |
| PF | pars flaccida |
| PF | partial filling |
| PF | partial Fourier |