| Acronym | Meaning |
| FEF | Forced Expiratory Flow (lung Function) |
| PVEC | Photovoltaic Energy Conversion |
| PRA | Probabilistic Risk Assessment |
| LCGTO-DF | Linear Combination Of Gaussian Type Orbitals-density Functional |
| CCR | Council For Chemical Research |
| AMCO | Age-momentum Correlation |
| RMCL | Recommended Maximum Contaminant Level |
| MES | Methyl Ester Sulfonates (surfactants) |
| TOTE | Tropical Ozone Transport Experiment |
| BO | Biorthonormal (wave Function) |