| Acronym | Meaning |
| MCDF-OL | Multiconfiguration Dirac-Fock Optimum Level |
| PEO | Poly(ethylene Oxide) |
| CSCM | Chemical Shift Correlation Map |
| RBE | Relative Biological Effectiveness |
| CCC | Convergent Close Coupling |
| ECOIN | European Core Inventory |
| HSRC | Hazardous Substance Research Center |
| DXRD | Differential X-ray Diffraction |
| FO-NACME | First-order Nonadiabatic Coupling Matrix Elements |
| VGO | Vacuum Gas Oil |