| Acronym | Meaning |
| PHF | Periodic Hartree-Fock |
| PHIP | Para-Hydrogen Induced Polarization |
| MESFET | Metal Semiconductor Field-effect Transistor |
| VD-RCC | Vibrational Diabatic-rotational Close-coupled (method In Mol. Collision Calcns.) |
| XMLD | X-ray Magnetic Linear Dichroism |
| AQPS | Air Quality Prediction System |
| VLF | Very Low Frequency (radiowaves) |
| WAP | Waste Analysis Plan |
| PEPICO | Photoelectron-photoion Coincidence Spectroscopy |
| EGU | European Geosciences Union |