| Acronym | Meaning |
| SLMTO | Surface Linear (combination) Of Muffin-tin Orbitals |
| TID | Thermionic Ionization Detector |
| VEOMP | Valence-electron-only Model Potential (for Mol. SCF Calcns.) |
| FDMS | Field-desorption Mass Spectrometry |
| BXE | Bombardment-induced X-ray Emission |
| CMC | Coupled Multiconfiguration |
| MCSTEP | Multiconfigurational Spin-tensor Electron Propagator |
| DSH | Dye-sensitized Heterojunction |
| ECCS | Emergency Core Cooling System |
| CSDW | Centrifugal Sudden (or Coupled States) Distorted Wave (methodfor Reactive Mol. Collisions) |