| Acronym | Meaning |
| CCF | Correlation Crystal Field |
| DGD | Decision Guidance Documents |
| LOEC | Lowest Observed Effect Concentration |
| ISO | International Organization For Standardization |
| DC | Blood-air Distribution Coefficient |
| NAI | Neutral Atom Imaging (astronomical Plasmas) |
| APWR | Advanced Pressurized Water Reactor |
| PGO | Phantom Group Orbital |
| QCFF/PI | Quantum Mechanical Consistent Force Field Method For Pi-electron Systems |
| AEMA | Auger Electron Microanalysis |