| Acronym | Meaning |
| TDTF | Time-dependent Thomas-Fermi |
| RISM | Reference Interaction Site Model |
| DWS | Drinking Water Standard |
| PUCHF | Perturbed Uncoupled Hartree-Fock |
| PTGC | Programmed-temperature Gas Chromatography |
| FID | Free Induction Decay (Fourier Transform Spectroscopy) |
| CIMI | Configuration Interaction From Molecular Integrals |
| OVFF | Orbital Valence Force Field |
| EVB | Empirical Valence Bond |
| RNS | Reactive Nitrogen Species |