| Acronym | Meaning |
| FX | Firefox -Metropolitan France (ISO 3166 Digram; Obsolete 1997) |
| IG | Inspector General |
| MLC | Member Of The Legislative Council (in India) |
| SACLOS | Semi-Automatic Command To Line Of Sight |
| CCRP | Command And Control Research Program |
| SLT | Speech And Language Therapist -Solid Logic Technology (electronics) - Swing Landing Trainer (paratroops) - (i)Secondary Lymphoid Tissue |
| RM | Raeto-Romansh Language (ISO 639-1 Code) |
| SIGINT | Signals Intelligence |
| RMC | Royal Military College (Australia |
| HBCD | HexaBromoCycloDodecane |