| Acronym | Meaning |
| PI | Pebi |
| YWCA | Young Women's Christian Association |
| TRADOC | (U.S. Army) Training And Doctrine Command |
| USPS | United States Postal Service |
| PG | Papua New Guinea (ISO 3166 Digram) -Parental Guidance (rating) |
| BA | Bachelor Of Arts -Bahrain (FIPS 10-4 Country Code) - Bosnia And Herzegovina (ISO 3166 Digram) -British Airways - British Army |
| ZC | Zettacoulomb |
| MMI | Man-Machine Interface |
| HAT | Haitian Creole Language (ISO 639-2 Code) |
| BRS | Battlefield Reasoning System |