| Acronym | Meaning |
| RT | Radio Telefs ireann |
| NYRA | National Youth Rights Association -New York Racing Association (horse Racing) |
| SNP | Single Nucleotide Polymorphism |
| AOU | American Ornithologists' Union |
| CV | Chuvash Language (ISO 639-1 Code) |
| ASTM | American Society For Testing And Materials |
| JIC | Joint Intelligence Centre |
| BUL | Bulgarian Language (ISO 639-2 Code) |
| YTD | Year-To-Date |
| MOW | Maintenance Of Way (also MW) |