| Acronym | Meaning |
| GUY | Guyana (ISO 3166 Trigram) |
| TRW | Thompson Ramo Wooldridge Inc. |
| CDM | Clean Development Mechanism (Kyoto Protocol) - Cold Dark Matter (astronomy) |
| UPI | United Press International |
| MEDEVAC | Medical Evacuation |
| HIN | Hindi Language (ISO 639-2 Code) |
| UMIST | University Of Manchester Institute Of Science And Technology |
| COS | Cooper Ornithological Society |
| PG | Petagram |
| LDS | Latter Day Saint - Liberal Democracy Of Slovenia |