| Acronym | Meaning |
| POA | Preoptic Area |
| POPW | Partially Orthogonalized Plane Wave |
| LWR | Light-water Reactor |
| ADST | Average Daily Soil Temperature |
| MISFET | Metal-insulator-semiconductor Field Effect Transistor |
| AVO | Average Virtual Orbital |
| IPIECA | International Petroleum Industry Environmental Conservation Association |
| CHMO | Constrained Hartree-Fock Orbitals |
| FEG | Field Emission Gun |
| GALP | Good Automated Laboratory Practices |