| Acronym | Meaning |
 | GTD | Getting Things Done |
| SUN | Soviet Union (ISO 3166 Trigram; Obsolete 1992) |
| 3D | Three |
| URY | Uruguay (ISO 3166 Trigram) |
| YSI | Young Scots For Independence |
| GCN | Gamma-ray Burst Coordination Network |
| GMBH | Gesellschaft Mit Beschr?nkter Haftung (German |
| BART | Bay Area Rapid Transit |
| NL | Dutch Language (ISO 639-1 Code) |
| PT | Platinum |
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