| Acronym | Meaning |
| FECS | Federation Of European Chemical Societies |
| MRSD-CI | Multireference Single And Double Excitation CI |
| IUPAC | International Union Of Pure And Applied Chemistry |
| ICSU | International Council Of Scientific Unions |
| TED | Thermal Electron Detectors |
| GIS | Gas Insulated Switchgear |
| NTR | Nontranslated Region |
| ERIS | Electrochemically Regenerated Ion Suppressors |
| LLW | Low-Level Waste |
| SVEA | Slowly Varying Envelope Approximation |