| Acronym | Meaning |
| HFBR | High Flux Beam Reactor |
| SOGVB | Spin Optimized Generalized Valence Bond Method |
| TSH | (classical) Trajectory Surface Hopping (for Ion-mol. Collisions) |
| SCCF | Spin-correlated Crystal Field |
| MPPT | Moeller-Plesset Perturbation Theory |
| CFRM | Continuous Filament Random Mat |
| TRAXS | Total Reflection Angle X-ray Spectroscopy |
| ETL | Electron Transport Layer |
| ARRPA | Air Resources Regional Pollution Assessment Model |
| ICE | Interleukin 1beta-converting Enzyme |