| Abbreviation | Definition |
|---|---|
| PSK | Phase-Shift Keying |
| PSL | PolyStyrene Latex |
| PSL | Porous Silicon Layer |
| PSLS | Polystyrene Latex Sphere |
| PSM | Personnel Status Monitor |
| PSM | Phase Shift Mask |
| PSMP | Process Safety Management Program |
| PSNR | Peak Signal-to-Noise Ratio |
| PSP | PaintShop Pro image format |
| PSP | Pure Sound Processor |
| PSPICE | Personal Computer Simulation Program with Integrated Circuit Emphasis |
| PSR | Perfectly Stirred Reactor |
| PSS | Personal Sound Studio |
| PSU | Power Supply Unit |
| PSV | Program Space Visibility |
| PSZ | Partially Stabilized Zirconia |
| PT | Peak to Trough |
| PT | Pivoting Tweeter |
| PT | Positional Tolerance |
| PT | Potential Transformer |