| Acronym | Meaning |
| SEN | Senegal (ISO 3166 Trigram) -Small Extension Node |
| ARC | Arc-second Raster Chart - Association For Retarded Citizens - Appalachian Regional Commission |
| AAAI | American Association For Artificial Intelligence |
| BGN | U.S. Board On Geographic Names -Bulgarian Lev (ISO 4217 Currency Code) |
| ARL | UK Admiralty Research Laboratory (1921?1977) - U.S. Army Research Laboratory - UIUC Aviation Research Laboratory |
| MILF | Moro Islamic Liberation Front -Mother I'd Like To Fuck |
| ONCE | Organizaci›n Nacional De Ciegos Espa?oles (Spanish |
| JPL | Jet Propulsion Laboratory |
| AIMP | Aurora Incremental Modernization Project |
| JSOA | Joint Special Operations Area |