| Acronym | Meaning |
| WBEPM | Weakest Bound Electron Potential Model (theory In Calcns. Of Ionization Potentials) |
| NMIJ | National Metrology Institute Of Japan |
| SEDM | State/EPA Data Management |
| FREEON | Spin-free Orbital |
| FOCI | First-order Configuration Interaction |
| ECD | Environmental Cleanup Division |
| EAE | Experimental Autoimmune Encephalomyelitis |
| IES | Institute Of Environmental Sciences |
| HDR | Hot Dry Rock (geothermal Reservoir) |
| IWMIS | INEL Industrial Waste Management Information System |