| Acronym | Meaning |
| SGP | Singapore (ISO 3166 Trigram) |
| BTU | British Thermal Unit |
| OIC | Officer In Charge |
| INFOSEC | Information Security |
| XHO | Xhosa Language (ISO 639-2 Code) |
| LX | Luxembourg (amateur Radio ITU Prefix) - Swiss International Airlines (IATA Code) |
| NAAFI | Navy |
| UDP | User Datagram Protocol |
| LBNL | Lawrence Berkeley National Laboratory |
| CHP | California Highway Patrol - Combined Heat And Power |