| Acronym | Meaning |
| SSN | Nuclear-Powered Attack Submarine (US Navy Hull Classification) -SIM Serial Number - Social Security Number - Socialist Solidarity Network - Subsystem Number (SCCP |
| WO | Warrant Officer |
| MTU | Tankovei Mostoukladchik (Russian ???????? ????????????? |
| FZRA | Freezing Rain (METAR Code) |
| AAAV | Advanced Amphibious Assault Vehicle |
| CUCV | Commercial Utility Cargo Vehicle |
| VU | Vanuatu (ISO 3166 Digram) -Vedanta University |
| NYSE | New York Stock Exchange |
| FS | Femtosiemens |
| YJ | Yottajoule |