| Acronym | Meaning |
 | PI | Pebi |
| FTL | Faster Than Light |
| IMBD | International Migratory Bird Day |
| PK | Picokelvin |
| MEK | Magyar Elektronikus Konyvtar - Message Encryption Key - Methyl Ethyl Ketone -Mujahideen Al-Khalq |
| WRAIR | Walter Reed Army Institute Of Research |
| PX | Post EXchange |
| TNO | Trans-Neptunian Object |
| NAAD | North American Air Defense |
| COFT | Conduct Of Fire Trainer (military) |
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