| Abbreviation | Definition |
|---|---|
| PTA | Post-Test Analysis |
| PTA | Potential Toxic Area |
| PTA | Propulsion Test Article |
| PTB | Payload Timing Buffer |
| PTC | Passive Thermal Control |
| PTC | Payload Training Complex |
| PTC | Portable Temperature Controller |
| PTCR | Pad Terminal Connection Room |
| PTCS | Passive Thermal Control Section |
| PTCS | Passive Thermal Control System |
| PTCS | Payload Module Thermal Control Subsystem |
| PTCS | Payload Test and Checkout System |
| PTCS | Planning, Training, and Checkout System |
| PTCS | Propellant Tanking Computer System |
| PTDDSS | PTD Data Selection Sheet |
| PTF | Payload Training Facility |
| PTFE | Polytetrafluorethylene |
| PTI | Preliminary Test Information |
| PTI | Pre-Programmed Test Input |
| PTI | Programmed Test Input |