| Acronym | Meaning |
| CRC | Cost Reduction Curve |
| MSBLS | Microwave Scanning Beam Landing System |
| ORD | Operational Requirements Document |
| SD | Specification Document |
| U/V | Under Voltage |
| RSMM | Redundant System Monitor Model |
| M | ECCA Master Electrical Common Connector Assembly |
| SSRD | Station Set Requirements Documents |
| FCRA | Fecal Collection Receptacle Assembly |
| ISPG | Institutional Support Planning GrouP |