| Acronym | Meaning |
| MACHO | MAssive Compact Halo Object |
| WRNS | Women's Royal Naval Service (WWII UK) (pronounced Wrens) |
| I2WD OR I?WD | U.S. Intelligence And Information Warfare Directorate (CERDEC) |
| BCT | Brigade Combat Team |
| I.E. | Id Est (Latin |
| PH.D. | Philosophi? Doctor (Latin |
| DRES | Defence Research Establishment Suffield (obsolete 2002) |
| LAK | Laotian Kip (ISO 4217 Currency Code) |
| IDO | Ido Language (ISO 639-2 Code) |
| EMCON | (Electromagnetic) Emissions Control |