| Acronym | Meaning |
| OTSBH | Over The Shoulder Boulder Holder |
| ASW | AntiSubmarine Warfare |
| SST | SuperSonic Transport -Training Submarine (US Navy Hull Classification) - Saturated Suction Temperature (refrigeration Cycles) |
| DORA | Defence Of The Realm Act |
| HU | Hungary (ISO 3166 Digram; FIPS 10-4 Country Code) |
| MN | Millinewton |
| BNICE | Biological |
| HIRD | Hurd Of Interfaces Representing Depth (cf. HURD) |
| ZHA | Zhuang Language (ISO 639-2 Code) |
| NAC | National Agency Check - U.S. Naval Avionics Center - U.S. Navy Advanced Concepts - North Atlantic Council - Northern Area Command |