| Acronym | Meaning |
| STEM | Scaled Taylor Exponential Model |
| ISCRF | Inhomogeneous Self-consistent Reaction Field Theory |
| GIAO | Gage Invariant Atomic Orbital |
| MATC | Maximum Acceptable Toxicant Concentrations |
| ESI | Ease-of-separation Index |
| YBCO | Yttrium Barium Copper Oxide |
| JI | Joint Implementation [with Regard To Greenhouse Gas Emission Redn.] |
| CAE | Constant Analyzer Energy |
| HVDB | Halogenated Volatile Disinfection By-products |
| SWMM | Stormwater Management Model |