| Acronym | Meaning |
| PUHF | (spin)-projected Unrestricted Hartree-Fock |
| SLE | Stochastic Liouville Equation (in Quantum Statistical Mechanics) |
| PIPICO | Photoion-photoion Coincidence |
| DEM | Distinguishable Electron Method |
| REP | Relativistic Effective Potential |
| WIMP | Wireless Implanted Magnetic Resonance Probes |
| QCPE | Quantum Chemistry Program Exchange |
| PSD | Position Sensitive Detector |
| TPSSIMS | Temperature Programmed Static Secondary Ion Mass Spectrometry |
| UEGO | Universal Exhaust Gas Oxygen Sensor |