| Acronym | Meaning |
| CSD | Cortical Spreading Depression |
| OBD | On-board Diagnosis |
| APUD | Amine Precursor Uptake And Decarboxylation |
| ULFM | Unified Ligand Field Model (for Mol. Electronic Energies) |
| MASER | Microwave Amplification By Stimulated Emission Of Radiation |
| DRP | Deutsches Reichpatent |
| CPMC-SCF | Coupled Perturbed Multiconfigurational SCF |
| PEM | Performance Evaluation Material |
| AF | Atomic Fluorescence |
| COG | Coke-oven Gas |