| Acronym | Meaning |
| ORI | Oriya Language (ISO 639-2 Code) |
| SUI | Sonic User Interface |
| TSN | Tswana Language (ISO 639-2 Code) |
| ROI | Return On Investment |
| AADT | Annual Average Daily Traffic Flow |
| KTS | Knight Of The Tower And Sword (of Portugal) |
| OS | Ossetic Language (ISO 639-1 Code) |
| PLO | Palestine Liberation Organization |
| GV | Manx Language (ISO 639-1 Code) |
| ZM | Zettametre |