| Acronym | Meaning |
| ACNFS | Advisory Committee On Nuclear Facility Safety |
| SEMPI | Singly Excited Modified Perturbation Theory |
| MRSI | Magnetic Resonance Spectroscopic Imaging |
| NIRMS | Noble Gas-ion Reflection Mass Spectrometry |
| ASO | Atomic Spin Orbital |
| IWG | International Working Group |
| UNAMAP | Users' Network For Applied Modeling Of Air Pollution |
| KKR-GF | Korringa-Kohn-Rostoker-Green Function |
| UBD | Under-bath Decarburization |
| PD | Photoelectron Diffraction |