| Abbreviation | Definition |
|---|---|
| PTIS | Program Test Input System |
| PTM | Pulse Time Modulation |
| PTMS | Precision Torque Measuring System |
| PTO | Participating Test Organization |
| PTO | Power Test Operations |
| PTP | Point-to-Point Phone(s) |
| PTR | Preliminary Test Report |
| PTR | PrinTeR |
| PTR | Program Trouble Report |
| PTS | Payload Test Set |
| PTS | Payload Transportation System |
| PTSD | Post Traumatic Stress Disorder |
| PTT | Push-to-Talk |
| P-TUBE | Pneumatic Tube |
| PTV | Pathfinder Test Vehicle |
| PTVS | Portable Test and Verification System |
| PU | PickUp |
| PU | Power Unit |
| PU | Propellant Unit |
| PU | Propellant Utilization |