| Acronym | Meaning |
| FAA | U.S. Federal Aviation Administration - Financial Aid Administrator - Fleet Air Arm - Functional Area Analysis |
| XO | ???†‡?…??? ????‰???? (Xristianos Orthodoksos |
| PASA | PolyAmide |
| PRK | Democratic People's Republic Of Korea (ISO 3166 Trigram) |
| WEU | Western European Union |
| TOP | Tongan Pa'anga (ISO 4217 Currency Code) |
| ROM | Read-Only Memory - Refuel On The Move - Royal Ontario Museum |
| J2EE | Java 2 Platform |
| T | Tera - Tesla - Tritium |
| NRC | National Research Council (U.S.) - Nuclear Regulatory Commission (U.S.) |