| Acronym | Meaning |
| HIMSS | HIgh-resolution Microwave Spectrometer Sounder |
| EPS | European Polar Satellite |
| NASA | National Aeronautics And Space Administration |
| FSL | Forecast Systems Laboratory (a NOAA ERL) |
| MSG | Meteosat Second Generation |
| COMSAT | COMmunications SATellite |
| V | Volts |
| AU | Astronomical Unit |
| ESSP | Earth System Science Pathfinder Mission (ESSP) |
| VISIT | Virtual Institute For Satellite Integration Training (NWS) |