| Acronym | Meaning |
| FX | Firefox -Metropolitan France (ISO 3166 Digram; Obsolete 1997) |
| AIAA | American Institute Of Aeronautics And Astronautics |
| RDDL | Resource Directory Description Language (riddle) |
| FRAGO | Fragmentary Order (military) |
| LIVE | Liquid Inertial Vibration Eliminator |
| SLBM | Sea/Submarine-Launched Ballistic Missile |
| AWOL | Absent Without Official Leave / Absent WithOut Leave (military Jargon) |
| SCNT | Somatic Cell Nuclear Transfer |
| JTLS | Joint Theater Level Simulation |
| DHS | U.S. Department Of Homeland Security |