| Abbreviation | Definition |
|---|---|
| PSR | Plastic Squid Robot toy |
| PSV | Pressure Safety Valve |
| PSW | Production Start Week |
| PT | Painted |
| PT | Penetrant Test |
| PT | Pressure Transmitter |
| PT | Pressure Treated |
| PTC | PVUSA Test Conditions |
| PTC | Pyramid Technical Consultants |
| PTCS | Performance Tested Comfort System |
| PTD | Petroleum Tanker Drivers |
| PTFE | Plumbers Tape For Everything |
| PTGB | People To Go Bowl |
| PTH | Plate Through Hole |
| PTH | Pure Titanium Hybrid |
| PTL | Pressure Treated Lumber |
| PTL | Punjab Tractors Limited |
| PTO | Permanently Turned Off |
| PTP | Platinum Temperature Probe |
| PTP | Porous Tungsten Plug |