| Acronym | Meaning |
| ECI | Earth Centered Inertia (inertials) |
| MORD | Medical Operations Requirements Document |
| PDS | Power Distribution System (Subsystem) |
| FHC | Flight Half Coupling |
| EXP | Exposure |
| LIN | Linear |
| CKT | Circuit |
| VGY | Velocity To Be Gained (Body Y-Axis) |
| HDR | High Data Rate |
| ALAE | Atmospheric Lyman Alpha Experiment |