| Acronym | Meaning |
| HF MO LCAO | Hartree-Fock MO LCAO |
| MCSCF | Multi Configuration Self Consistent Field |
| LNAPL | Light Nonaqueous Phase Liquid |
| RIA | Relative Ion Abundance |
| CSF | Colony-stimulating Factor |
| EFG GTO | Electric Field Gradient Gaussian-type Orbital |
| ACSI | Accelerated Strategic Computing Initiative (for Fusion Reactor) |
| ESA | Electrostatic Sector Analysis |
| GPF | Gaussian Polarization Function |
| POPCORN | Photo-Oxidant Formation By Plant Emitted Compds. And OH Radicals In North-Eastern Germany |