| Acronym | Meaning |
| SUSIM | Solar Ultraviolet Spectral Irradiance Monitor |
| OIR | Operations IntegrationReview |
| SR&QA | Safety |
| GSO | Ground Systems Operations |
| ECN | Engineering Change Notice |
| LOR | Lunar Orbit Rendezvous |
| DP | Double Pole |
| PEG | Powered Explicit Guidance |
| ESOC | European Space Operations Center |
| DCC | DCCUDigital Command And Control Unit |