| Acronym | Meaning |
| MSOIN | Minor Subcontractor Or IDWA Notification |
| VREL | Relative Velocity |
| BPD | Baseline Program Documentation |
| FDS | Flight Dynamics Software/System |
| O2 | Oxygen |
| POP | Perpendicular-to-Orbit Plane |
| CPDDS | COmPuter Program Detail Design Specification |
| HPOTP | High Pressure Oxidizer Turbopump |
| PWA | Product Work Authorization |
| CST | Crew Systems Trainer (One-G Trainer) |