| Acronym | Meaning |
| QCISD | Quadratic Configuration Interaction With Single And Double Excitation |
| SCOT | Support Coated Open Tubular |
| VBHL | Valence Bond Heitler-London (wave Function) |
| AIIM | Association For Information And Image Management |
| PATOLIS | Patent Online Information System |
| PRDDO | Partial Retention Of Diatomic Differential Overlap |
| PIO | Paired Interaction Orbital |
| REM | Reservoir Eutrophication Model |
| HFD | Hartree-Fock-dispersion (type Of Intermol. Potential) |
| COSTR | Collaborative Solar-Terrestrial Research |