| Acronym | Meaning |
| DAF | Data Acquisition Facility |
| GUID | Guidance |
| VP | Vacuum Pump |
| CAS | Control Augmentation System |
| TPM | Terminal Phase Midcourse |
| T+ | Time Postintegration |
| DDS | Detailed Design Specification |
| EAM | Electrical Accounting Machine |
| DM | DeveloPmental Instrumentation MDM.Mid |
| PGS | Power Generation Subsystem |