| Acronym | Meaning |
| MTVC | Manual Thrust Vector Control |
| PSV | Planetary Space Vehicle |
| ECCB | Engineering Change Control Board |
| BUOU | Backup Optical Unit |
| FPM | Folding Platform Mechanism |
| FRP | Fuselage Reference Plane |
| GPC | Gel Permeation Chromatograph |
| MIC | Management Information Center |
| SSRD | Station Set Requirements Documents |
| PCZ | Physical Control Zone |