| Acronym | Meaning |
| ACPCSA | Adiabatic Capture Partial Centrifugal Sudden Approximation |
| ILEED | Inelastic Low-energy Electron Diffraction |
| PMC-SCF | Pair Multiconfiguration-SCF (with Electron Pair Optimization) |
| ERCC | Excision Repair Cross-complementing |
| PWSB | Plane-wave Second Born |
| GDS | Glow Discharge Spectrometer |
| NOE | Nuclear Overhauser Enhancement |
| LCCD | Linear Coupled-cluster (method With) Double (excitations) |
| WBEPM | Weakest Bound Electron Potential Model (theory In Calcns. Of Ionization Potentials) |
| ONR | Office Of Naval Research |