| Acronym | Meaning |
| DST | Daylight Saving Time |
| DTG | Date-Time Group |
| SWT | Sea Water Tank |
| USNA | United States National Arboretum - United States Naval Academy |
| PLCC | Plastic Leaded Chip Carrier (electronics) |
| ASSC | Association For The Scientific Study Of Consciousness |
| SI | Sinhalese Language (ISO 639-1 Code) |
| SVN | Slovenia (ISO 3166 Trigram) |
| MMCM | Machinist's Mate |
| LAX | Los Angeles International Airport |