| Acronym | Meaning |
| WWEMA | Waste And Wastewater Equipment Manufacturers Association |
| NPDWR | National Primary Drinking Water Regulations |
| PAG | Periaqueductal Gray |
| VEOMP | Valence-electron-only Model Potential (for Mol. SCF Calcns.) |
| TDCHF | Time-dependent Coupled Hartree-Fock |
| EOM | Equations Of Motion Method (green's Function) |
| LNT | Liquid Nitrogen Temperature |
| HEU | Highly Enriched Uranium |
| NFCR | National Foundation For Cancer Research |
| SHM | Screened Hydrogenic Model (for Electronic Structure In Plasmas) |