| Acronym | Meaning |
| DDHS | Digital Data Handling System |
| POP | Photochemical Oxidation And Products |
| XUV | Extreme Ultraviolet |
| RCA | Request For Contract Action |
| UARC | Upper Atmosphere Research Corporation |
| AEEN | Agence Europeenne Pour L'Energie Nucleaire |
| RCPG | Research Coordination And Planning Group |
| ERB | Earth Radiation Budget |
| FILOS | Far Infrared Limb Observing Spectrometer |
| PAIR | Particulate Airborne Inlet Research |