| Abbreviation | Definition |
|---|---|
| PI | Principal Investigator |
| PI | Procurement Item |
| PI | Program Introduction |
| PIA | Preinstallation Acceptance |
| PIA | Pre-Installation Acceptance |
| PIA | Project Impact Analysis |
| PIA | Project Initiation Agreement |
| PIAR | Project Impact Analysis Report |
| PIB | Pyrotechnic Installation Building |
| PIBM | Planetary Interchange Of Bioactive Material |
| PIC | Payload Integration Center |
| PIC | Payload Integration Committee |
| PIC | Pre-Installation Checkout |
| PIC | Programmable Interval Clock |
| PIC | Pyro Ignition Control |
| PIC | Pyro Initiator Capacitor |
| PIC | Pyrotechnic Initiator Controller |
| PICA | Pyrotechnic Initiator Control Assembly |
| PICO | Pre-Installation CheckOut |
| PICP | Program Interface Control Plan |