| Acronym | Meaning |
| NES | US National Eutrophication Study |
| TID | Traveling Ionospheric Disturbance |
| VES | Vapor Extraction System |
| WATR | Water Attenuation By Transverse Relaxation |
| NAERG | North American Emergency Response Guidebook |
| DFA | Detrended Fluctuation Analysispar |
| OCD | Overlapping Charge Density (model In Electronic Structure) |
| IMS | Ion Mass Spectrometer |
| CPI | Carbon Preference Index |
| IP | Impact Parameter Approximation |