| Acronym | Meaning |
| NATCA | National Air Traffic Control Administration |
| IGFA | Intergovernmental Funding Agency |
| GAL | Galileo |
| GOMOT | Global Observations |
| IPU | Instrument Processor Unit |
| APDF | Accelerator Performance Demonstration Facility |
| AM | Amplitude Modulation |
| BIORESP | Bio Response |
| ALBM | Air-launched Ballistic Missile |
| FTIR | Fourier Transformed Infrared |