| Acronym | Meaning |
| BRA | Brazil (ISO 3166 Trigram) |
| BTIS | Battlefield Target Identification System |
| OTO | Ordo Templi Orientis (Latin |
| YL | Yoctolitre |
| CDEC | U.S. Combat Development Experimentation Center |
| MMS | Multimission Modular Spacecraft |
| PN | Piconewton |
| AFG | Afghanistan (ISO 3166 Trigram) |
| COLA | Comp.os.linux.announce - Cost Of Living Adjustment |
| SG | Sango Language (ISO 639-1 Code) |