| Acronym | Meaning |
| TTHM | Total Trihalomethane |
| TEO | Topological Equivalent Orbital |
| HAT | Humid-air Turbine [cycle] |
| PHF | Paired Helical Filament |
| SHIRE | Southern Hemisphere Infrared Experiment |
| GFEMO | Generalized Free Electron Molecular Orbital |
| ASW | Amorphous Solid Water |
| SCEPM | Self-consistent Empirical Pseudopotential Method |
| NEMI | National Environmental Methods Index |
| MCF | Mutually Consistent Field Method (in Calcns. On Intermolecular Interactions) |