| Acronym | Meaning |
| SETI | Search For ExtraTerrestrial Intelligence |
| APHA | American Public Health Association |
| NOAA | U.S. National Oceanic And Atmospheric Administration |
| ICAO | International Civil Aviation Organization |
| LOC | Level Of Operational Capability - Limited Operational Capability - Lines Of Code - Lines Of Communication - See Entry |
| IDC | International Data Corporation |
| OD | Old Dragon - Ordnance Datum (nautical Charts) -Overdose |
| MAPS | Monitoring Avian Productivity And Survivorship |
| ECW | Eastern Championship Wrestling - Extreme Championship Wrestling |
| AAAV | Advanced Amphibious Assault Vehicle |