| Acronym | Meaning |
| NEVE | Nonempirical Valence Electron Method |
| EKT | Extended Koopmans Theorem |
| OOS | Optical-oscillator Strength |
| GHF | Generalized Hellmann-Feynman (theorem) |
| ECS | Energy-corrected Sudden (scaling Theory In Mol. Collisions) |
| VLT | Very Large Telescope |
| MAGW | Momentum-averaged Gaussian-weighted (method In Calcns. Of Electron-momentum Distributions) |
| LVSEM | Low Voltage Scanning Electron Microscopy |
| MCA | Middle Cerebral Artery |
| TRLIF | Time-resolved Laser-induced Fluorescence |