| Acronym | Meaning |
| DWRF | Drinking Water Research Foundation |
| VLT | Very Large Telescope |
| PWBA-EX | Plane-wave Born Approxn. (with) Exchange |
| CAS-CI | Complete Active Space-configuration Interaction |
| SPI | Society For The Plastics Industry |
| CCR | Complex Coordinate Rotation (method For Calcns. Of Resonances In Scattering) |
| MCOPM | Multiconfiguration Optimized Potential Model |
| IRMM | Institute For Reference Materials And Measurements |
| ASW | Axial Spin Wave (type Of Hartee-Fock Wave Function) |
| PEL | Permissible Exposure Limit |