| Acronym | Meaning |
| BIT | Binary Digit |
| XBSS | X-ray Background Survey Spectrometer |
| SAFIRE | Spectroscopy Of The Atmosphere Using Far InfraRed Emission |
| OAO | Orbiting Astronomical Observatory |
| UHF | Ultra High Frequency |
| MLS | Microwave Limb Sounder (EOS) |
| ITS | Interferometer Thermal Sounder (HIS) |
| GEWEX | Global Energy And Water Cycle EXperiment (WCRP) |
| WUPPE | Wisconsin Ultraviolet PhotoPolarimeter Experiment |
| AMS | American Meteorological Society |