| Acronym | Meaning |
| OCD | Obsessive-Compulsive Disorder |
| NHO | N?ringslivets Hovedorganisasjon (Confederation Of Norwegian Enterprises |
| IFRB | International Frequency Registration Board |
| AFIST | Abrams Full Crew Interactive Skills Trainer |
| BI | Burundi (ISO 3166 Digram) |
| AMCB | U.S. Army/Marine Corps Board |
| NAC | National Agency Check - U.S. Naval Avionics Center - U.S. Navy Advanced Concepts - North Atlantic Council - Northern Area Command |
| AAS | Advanced Automation System - American Astronomical Society (double-A-S) |
| WIMP | Weakly Interacting Massive Particle - Windows |
| OMT | Object Model Template |