| Acronym | Meaning |
| PACE | Prelaunch Automatic Checkout Equipment |
| M | Meter |
| FLEX | Flexible |
| EPDS | Electrical Power Distribution System |
| CDS | Central Data Subsystem |
| EEM | EarthEntryModule |
| SWT | Sextant |
| PIC | Pyro Initiator Controller |
| JAEIC | Joint Atomic Energy Intelligence Committee |
| P&M | Phase Modulation (Modulated) |