| Acronym | Meaning |
| YJ | Yottajoule |
| BTN | Bhutan (ISO 3166 Trigram) - Bhutanese Ngultrum (ISO 4217 Currency Code) |
| GINO | Godzilla In Name Only |
| DY | Dysprosium |
| HDD | Hard Disk Drive - High-Density Disk |
| CTDB | Compact Terrain Data Base (file Format) |
| SESSPE | Submarine Escape And Surface Survival Personnel Equipment |
| IDL | Interface Definition Language |
| SIGINT | Signals Intelligence |
| SASOL | Suid Afrikaanse Steenkool En Olie (Afrikaans |