| Acronym | Meaning |
| IQSY | International Years Of The Quiet Sun |
| CCSDS | Consultative Committee For Space Data Systems |
| NSSP | National Severe Storms Project |
| FTACH | Fourier Tachometer |
| ECS | EOSDIS Core System |
| F-V | Fussell-Vesely |
| FAT | Factory Acceptance Test |
| GAU | General Accounting Unit |
| CCCMA | Canadian Centre For Climate Modeling And Analysis |
| HIRIS | High Resolution Imaging Spectrometer |