| Acronym | Meaning |
| LASER | Light Amplification By Stimulated Emission Of Radiation (cf. Maser) |
| WIYN | Wisconsin Indiana Yale NOAO Telescope Consortium |
| PNF | Pilot Not Flying (aviation) |
| WEU | Western European Union |
| SAD | Seasonal Affective Disorder - Situational Awareness Display |
| MTM | Methods-Time Measurement |
| BT | Bathythermograph -Bhutan (FIPS 10-4 Country Code; ISO 3166 Digram) - (ii) BitTorrent - (iii) British Telecommunications Plc |
| IG | Inspector General |
| MPA | Maritime Patrol Aircraft - Master Of Public Administration |
| DAWN | (U.S.) Drug Abuse Warning Network |