| Acronym | Meaning |
| FS | Flight System |
| EPS | Electrical Power System (Subsystem) |
| BP | Blood Pressure |
| IMD | Intermediate |
| MAR | Memory Address Register |
| FMOFPL | First Manned Orbital Flight With Payload |
| EUV | Extreme Ultraviolet |
| FSO | Functional Supplementary Objective |
| SRR | Shuttle Requirements Review |
| QPS | Quantity Planning Specification |