| Acronym | Meaning |
| AT | Accelerator Technology |
| VOR | Visual Omnirange |
| NCF | Network Control Facility |
| ADC | Authorized Derivative Classifier |
| GEO 2000 | National Science Foundation's Geosciences Beyond 2000 |
| NAO | North American Oscillation |
| O-O | Object-oriented |
| ARIS | Airborne Research Instrumentation System |
| GEM | Global Environmental Multiscale Model |
| SRON | Space Research Organization Of The Netherlands |