| Acronym | Meaning |
| SEOS | Synchronous Earth Observation Satellite |
| NMI | Nautical Mile |
| TSCP | Training Simulator Control Panel |
| CSAS | ComPuterized Status Accounting System |
| PKM | Perigee KickMotor |
| CPD | R Contractor's Preliminary Design Review |
| FDI | Fault Detection And Identification |
| SAP | Site Activation Need Date |
| STA | Static Test Article |
| RTD | Rate Damping |