| Acronym | Meaning |
| RMPM | Renormalized Multicenter Potential Model (for Scattering) |
| IRRAS | Integrated Reliability And Risk Analysis System |
| AES | Auger Electron Spectroscopy |
| ORC | Origin Recognition Complex |
| ESTEC | European Space Research And Technology Centre |
| CHEMRAWN | Chemical Research Applied To World Needs |
| SSSD | Small-scale, Short-duration |
| BKW | Bobylev-Krook-Wu (method For Solving The Boltzmann Equation For A Mol. System) |
| GNO | Geminal Natural Orbital |
| MBBR | Moving Bed Biofilm Reactor |