| Acronym | Meaning |
| NOGF | Nonorthogonal Group Function Approximation |
| DRPA | Direct Random Phase Approximation |
| OIC | Optical Interface Coupler |
| ASE | Activated Sludge Effluent |
| PVEC | Photovoltaic Energy Conversion |
| TOST | Turbine Oil Stability Test |
| DLTFS | Deep Level Transient Fourier Spectroscopy |
| CCRIS | Chemical Carcinogenesis Research Information System |
| IGAC | International Global Atmospheric Chemistry |
| SET | Single Electron Transistor |