| Acronym | Meaning |
| IRAS | Infrared Astronomical Satellite |
| CY | Welsh Language (ISO 639-1 Code) |
| RV | Reconnaissance Vehicle - Recreational Vehicle - Re-entry Vehicle |
| ACLU | American Civil Liberties Union |
| HT | Haitian Creole Language (ISO 639-1 Code) |
| XUL | XML User Interface Language |
| MER | Mars Exploration Rover |
| NAVSTAR | Navigation Satellite Timing And Ranging |
| CDT | Central Daylight Saving Time (UTC-5 Hours) |
| SO | Somali Language (ISO 639-1 Code) |