| Acronym | Meaning |
| AT | Astatine |
| LER | Loss-Exchange Ratio |
| AD | Air Defence -Andorra (ISO 3166 Digram) -Anno Domini (Latin |
| CHAMPUS | (U.S.) Civilian Health And Medical Program Of The Uniformed Services |
| BR | Bromine |
| RSTA | Reconnaissance |
| HTTP | HyperText Transfer Protocol |
| SIMAC | Semantic Interaction With Music Audio Contents |
| SGC | Server Gated Cryptography -Stargate Command |
| CM | Cameroun (FIPS 10-4 Country Code; ISO 3166 Digram) -Cruise Missile -Nine Hundred (in Roman Numerals) |