| Abbreviation | Definition |
|---|---|
| PERRL | Pupils equally round and reactive to light |
| PERRLA | Pupils Equally Round and Reactive to Light and Accommodation |
| PERT | Pertussis |
| PERUBAL | Peruvian Balsam |
| PES | Psychiatric Evaluation Service |
| PESA | Percutaneous Epididymal Sperm Extraction |
| PET | Patulous Eustacian Tube |
| PET | Perfusionist Emergency Technician |
| PET | Petrolatum |
| PET | Physician Emergency Technician |
| PET | Psychic Empathetic And Telepathic |
| PETUBE | Perieustachian Tube - Ventilatory Tube For The Eardrum |
| PEV | Prokaryotes, Eukaryotes, & Viruses |
| PEW | Physician Evaluation Websites |
| PEW | Pink Eyes White |
| PEX | Pesticide Exposure |
| PF | Plantar Fasciitis |
| PF | Plantar Flexion |
| PF | Pulmonary Fibrosis |
| PFD | Post-Festival Depression |