| Acronym | Meaning |
| AEGIS | ATM European Group For Improvement Of Scenarios |
| HF MO LCAO | Hartree-Fock MO LCAO |
| DWTM | Distorted Wave T-matrix (for Electron-atom Scattering) |
| EFTA | European Free Trade Association |
| ISRS | Impulsive Stimulated Raman Scattering |
| PBMS | Performance-based Measuring System |
| AQPS | Air Quality Prediction System |
| PAA | Photon Activation Analysis |
| RAP | Receptor-associated Protein |
| DAB | Dipole Adapted Basis (wave Function) |