| Acronym | Meaning |
| M | Mass |
| MVA | Main Valve Actuator |
| OIA | Orbiter Interface Adapter |
| EOPO | Equal Opportunity Program Office |
| ICC | Intercomputer Channel |
| EPA | Environmental Protection Agency |
| VSWR | Visual Standing Wave Ratio |
| TO | Takeoff |
| SL-SSS | Spacelab Subsystem(s) Segment |
| VLS | Vandenberg Launch And Landing Site |