| Acronym | Meaning |
| CDS | Command And Data Subsystem |
| SMEX | Small EXplorers |
| LGM | Little Green Men |
| EODC | Earth Observation Data Centre |
| MOMV | Manned Orbital Maneuvering Vehicle |
| ACR | Active Cavity Radiometer |
| ESIS | European Space Information System |
| INCO | Integrated Communications Officer |
| FTS | Flight Telerobotic Servicer |
| REM | Rat Enclosure Module |