| Acronym | Meaning |
| AWRG | Acid Waters Review Group (UK) |
| (SC)2(CI+PT2) | Self-consistent Size-consistent (CI+second-order Perturbation) |
| VIMOX | Volume Identical Metal Oxidation |
| FIM | Forced Impulse Method (in Atom Ion-impact Ionization) |
| NYSDEC | New York State Department Of Environmental Conservation |
| ECCI | Electron Channeling Contrast Imaging |
| ISEC | Inverse Size-exclusion Chromatography |
| LART | Laser Absorption Radiation Thermometry |
| LO | Localized Orbital |
| CNDO SP | Complete Neglect Of Differential Overlap Spin Polarization |