| Acronym | Meaning |
| JI | Joint Implementation |
| LBY | Libya (ISO 3166 Trigram) |
| MEMS | Microelectromechanical System |
| FEAR | First Encounter Assault Recon - False Evidence Appears Real |
| IR | Infrared - Intelligence Requirement (military) -Iran (FIPS 10-4 Country Code; ISO 3166 Digram) - Iran Air (IATA Alpha Code) See Entry For More |
| CTDB | Compact Terrain Data Base (file Format) |
| CBLA | Comparative Bullet Lead Analysis |
| SC | Cruiser Submarine (US Navy Hull Classification) - Saint Kitts And Nevis (FIPS 10-4 Country Code; From Saint Christopher) - Seychelles (ISO 3166 Digram) - South Carolina (postal Symbol) |
| WRT | World Rally Team |
| CML | Chemical -Chronic Myelogenous Leukemia (formerly Chronic Myeloid Leukemia) |