| Acronym | Meaning |
| SEG | Segment |
| RTCC | Real-Time Computer Command (UPlink) |
| CCATS | Command |
| EOP | Experiments Of Opportunity |
| MPSR | Mission Profile Storage And Retrieval |
| MAIDS | Multipurpose Automatic Inspection And Diagnostic |
| DETR | Detector |
| EVA | Extravehicular Activity |
| UL | Upper Left (S-Band Antenna) |
| LPOT | Low-pressure Oxidizer Turbopump |