| Acronym | Meaning |
| MMAC | Multi-Media Access Center |
| OMTF | Optical Modulation Transfer Function |
| ALEC | American Legislative Exchange Council |
| GEOS | Geostationary Earth-Orbiting Satellite |
| AT | Antarctic Treaty |
| FBI | Federal Bureau Of Investigation |
| PCC | Profiler Control Center |
| RA | Radio Antenna |
| PDS | Planetary Data System |
| SEM | Scanning Electron Microscope |