| Acronym | Meaning |
| GSFC | Goddard Space Flight Center |
| TUTT | Tropical Upper-tropospheric Trough |
| OCC | Operations Control Center |
| CAST | Council For Agricultural Science And Technology |
| PCNFS | Personal Computer Network File System |
| TAP | Transportation Alternatives Program |
| ADA | Americans With Disabilities Act |
| EIR | Eidgenossisches Institut Fur Reaktorforschung |
| ARF | Aviation Route Forecast |
| ADC | Authorized Derivative Classifier |