| Acronym | Meaning |
| ECCI | Electron Capture Chemical Ionization |
| LLS | Linear-least Squares |
| TIROS | Television And IR Observation Satellite |
| GICS | Grants Information And Control System |
| DNA | Deoxyribonucleic Acid |
| MTBF | Mean Time Between Failure |
| ESCAPE | Evaluation Of Strategies To Address Climate Change By Adapting To And Preventing Emissions |
| SIGLE | System For Information On Grey Literature In Europe |
| COS | Cosmic Origins Spectrograph |
| EOM | Extractable Organic Matter |