| Acronym | Meaning |
| PNO-CE | Pseudonatural Orbital-configuration Expansion |
| DTC | Developmental Test Command [US Army] |
| DDMO | Differential Density Matrix Overlap (index |
| WGS | Water Gas Shift Reaction |
| EFV GTO | Electric-field-variant Gaussian-type Orbital |
| PIV | Particle Image Velocimetry |
| PWPP | Plane-wave Pseudopotential |
| EGU | European Geosciences Union |
| GBH | Gravel Bed Hydroponic System (for Wastewater Treatment) |
| DSH | Dye-sensitized Heterojunction |