| Acronym | Meaning |
 | SPA | Spanish Language (ISO 639-2 Code) |
| TA | Target Acquisition - Teaching Assistant -Tera-ampere -Territorial Army (UK) -Tristan Da Cunha (ISO 3166 Digram) |
| RB | Rubidium |
| MCA | Micro Channel Architecture - MultiChannel Analyzer |
| UNFCCC | United Nations Framework Convention On Climate Change |
| FG | Fog (METAR Code) - French Guiana (FIPS 10-4 Territory Code) |
| COFT | Conduct Of Fire Trainer (military) |
| PMSC | NATO Political-Military Steering Committee On Partnership For Peace |
| E? OR E3 | Many |
| NETL | (US) National Energy Technology Laboratory |
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