| Acronym | Meaning |
| TLS | Timor-Leste (ISO 3166 Trigram) -Times Literary Supplement |
| BISEPS | Battlefield Identification System Environment Performance Simulation |
| IEA | International Energy Agency |
| NLB | Non-Linear Battlefield |
| AADT | Annual Average Daily Traffic Flow |
| IJN | Imperial Japanese Navy (World War II) |
| THG | Tetrahydrogestrinone |
| CERCLA | U.S. Comprehensive Environmental Response |
| ACHT | Average Call Hold Time |
| CGM | Computer Graphics Metafile |