| Abbreviation | Definition |
|---|---|
| PNC | Postnecrotic Liver Cirrhosis |
| PND | Paroxysmal Nocturnal Dyspnea |
| PNET | Primitive neuroectodermal tumour Context: CNS tumours |
| PNG | Portable Network Graphic |
| PNH | Paroxysmal Nocturnal Hemoglobinuria |
| PNI | Peripheral Nerve Injury |
| PNL | Peripheral Nerve Lesion |
| PNP | Plug And Play |
| PNP | Pediatric Nurse Practitioner |
| PnP-X | Plug And Play Extensions |
| PNS | Peripheral Nervous System |
| PNS | Peripheral Nerve Stimulation |
| PO | Post Office |
| PO | Postal Order |
| PO | Plus One |
| POA | Programme Of Action |
| POAM | Polar Ozone Aerosol Monitor |
| POB | Preventive Oncology Board |
| POC | Parameter Occurrence Code |
| POC | Payload Operations Center |
| POC | Processes of Change Questionnaire |
| POC | Purchase Order Closeout |
| POCC | Payload Operations Control Center |
| POCN | Purchase Order Change Number |
| POCN | Purchase Order Change Notice |
| POD | Proximity Opticai Device |
| POD | Probability of Detection |
| POD | Payload Operations Division |
| POD | Payload Operations Director |
| POE | Pediatric Oncology Education |
| POE | Pilot Operational Equipment |
| POE | Property operating expenses |
| POEM | Polar Orbiting Earth Mission |
| POEM | Polar-Orbit Earth Observation Mission |
| POES | Polar Orbiting Environmental Satellite |
| POES | Polar Operational Environmental Satellite |
| POG | Piece Of Garbage |
| POG | Pediatric Oncology Group (USA) |
| POG | The Pediatric Oncology Group |
| POGO | Polar Orbiting Geophysical Observatory |
| POGO | Pogo Suppression System |
| POI | Propellant Quantity Indicator |
| POI | Product of Inertia |
| POK | Pakistan Occupied Kashmir |
| PoK | Pak occupied Kashmir |
| POL | Position Organization Listing |
| POLAR | Polar Plasma Laboratory |
| POLAR | Production Order Location and Reporting |
| POM | Printer Output Microfilm |
| POM | Pallet-Only Mode |