| Acronym | Meaning |
| DXS | Diffuse X-ray Spectrometer |
| PV | PhotoVoltaic |
| ERBS | Earth Radiation Budget Satellite |
| XBSS | X-ray Background Survey Spectrometer |
| EUMETSAT | EUropean Organization For The Exploitation Of METeorological SATellites |
| SAB | Satellite Applications Branch (old. NESDIS) |
| ITOS | Improved Television And Infrared Observation Satellite (1970s) |
| ENSO | El Ni?o/Southern Oscillation |
| EOSDIS | Earth Observing System Data And Information System |
| GMT | Greenwich Mean Time (repl. By UTC) |