| Acronym | Meaning |
 | FR | Francium |
| USDA | United States Department Of Agriculture |
| XC | Ninety (in Roman Numerals) |
| ATK | Attack |
| RPO | Radiation Protection Officer |
| IU | Inuktitut Language (ISO 639-1 Code) |
| EASA | European Aviation Safety Agency |
| OPA | Other Procurement |
| NASP | National Aerospace Plane |
| QAT | Qatar (ISO 3166 Trigram) |
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