| Acronym | Meaning |
| HW | Hotwire |
| FMEC | Forward Master Events Controller |
| ELS | Earth Landing System (Subsystem) |
| CR/DIR | Change Request Directive |
| OWDE | One-Way Doppler Extraction |
| AMSU | Advanced Microwave Sounding Unit |
| M | LcsManagement Information And Control System |
| IWG | Interface Working Group |
| KIB | KiloPounds |
| EPDS | Electrical Power And Distribution Subsystem |