| Abbreviation | Definition |
|---|---|
| PMRS | Proton Magnetic Resonance Spectroscopy |
| PMSP | Professional Master of Science in Physics |
| PMT | Photo Multiplier Tube |
| PMT | photomultiplier tube |
| PMT | Photon Magnetic Transfer |
| PMTS | Predetermined Motion Time System |
| PMUG | Parametric Measurement Unit Guard |
| PMV | Predicted Mean Vote |
| PN | PN (Pressure Nominal) |
| PN | Proton Neutron |
| PNEM | Passive Neutron Enrichment Meter |
| PNEUM | 1. pneumatic. (adjective) operated by air or by the pressure or exhaustion of air: a pneumatic drill.2. pneumatics. (noun) the branch of physics that deals with the mechanical properties of air and ot |
| PNGAA | Prompt Neutron Gamma Activation Analysis |
| PO | Project Objectives |
| PO2 | Pressure of Oxygen |
| POCOE | Principle Of Conservation Of Energy |
| POF | Physics of Fluids |
| POF | Plane Of Focus |
| POLS | Physics of Living Systems |
| POPRV | Pilot Operated Pressure Relief Valve |