| Acronym | Meaning |
| OVFF | Orbital Valence Force Field |
| GRHF | Generalized Restricted Hartree-Fock |
| LOEC | Lowest Observed Effect Concentration |
| EUVID | Extreme UV Imaging Detector |
| IATA | International Air Transport Association (Geneva |
| SFC | Specific Fuel Consumption |
| TCA | Turbulent Contact Absorber |
| WDI | World Drug Index |
| GIABS | Gastro-Intestinal Absorptivity |
| DNAPL | Dense Nonaqueous Phase Liquid |