| Acronym | Meaning |
| GEKT | Generalized Extended Koopmans Theorem |
| ICR | Ion Cyclotron Resonance (mass Spectrometry) |
| ASRG | Analytical Spectroscopy Research Group |
| NISTO | Non-integer Slater-type Orbital |
| LAS | Linear Alkylbenzene Sulfonates (anionic Surfactants) |
| INCI | International Nomenclature Cosmetic Ingredient |
| PIPLC | Phosphatidylinositol Phospholipase C |
| TDMCSCF | Time-dependent MC-SCF |
| RCI | Relativistic Configuration Interaction |
| INDO/SP | Intermediate Neglect Of Differential Overlap/spin Polarization |