| Acronym | Meaning |
 | LCOL | Lieutenant-Colonel (Canada |
| FR | France (FIPS 10-4 Country Code; ISO 3166 Digram) |
| IKU | Inuktitut Language (ISO 639-2 Code) |
| YTS | Youth Training Scheme |
| HAWK | Homing All The Way Killer (air Defence System) |
| UDTS | Uppsala-DLR Trojan Survey |
| DPPDB | Digital Point Positioning Database |
| FAA | U.S. Federal Aviation Administration - Financial Aid Administrator - Fleet Air Arm - Functional Area Analysis |
| GZK | Greisen-Zatsepin-Kuzmin Cut-off (cosmic Ray Energies) |
| IDN | Indonesia (ISO 3166 Trigram) |
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