| Acronym | Meaning |
| AE | Acoustic Emission |
| PWPP | Plane-wave Pseudopotential |
| ETBE | Ethyl Tert Butyl Ether |
| TTSS | Tropospheric Trace Species Sounder |
| TID | Traveling Ionospheric Disturbance |
| DEXA | Dual Energy X-ray Absorptiometry |
| EDNAP | European DNA Profiling |
| PSPC | Position Sensitive Proportional Counter |
| IFSD | In-Flight Shutdown |
| CDA | Conceptual Design Activity |