| Acronym | Meaning |
| SMM | Solar Maximum Mission |
| ALEXIS | Array Of Low Energy X-ray Imaging Sensors |
| APT | Automatic Picture Transmission |
| SHARE | Space Station Heat Pipe Advanced Radiator Element |
| SOB | Strap-On Booster |
| IGBP | International Geosphere/Biosphere Programme |
| MDSSC | McDonnell Douglas Space Systems Corp |
| CNO | Carbon-Nitrogen-Oxygen |
| CM | Command Module |
| FOS | Faint Object Spectrograph |