| Acronym | Meaning |
| MRIR | Medium Resolution Infrared Radiometer |
| SMS | Shuttle Mission Simulator |
| DRAO | Dominion Radio Astrophysical Observatory |
| CFF | Columbus Free Flyer |
| HTVL | Horizontal Takeoff Vertical Landing |
| CRISTA | Cryogenic Infrared Spectrometer Telescope For Atmosphere |
| PAM | Payload Assist Module |
| GR | General Relativity |
| AC | Atlas Centaur |
| SWAS | Submillimeter Wave Astronomy Satellite |