| Acronym | Meaning |
| WLM | Working Level Month (for Radiation Exposure) |
| SPR | Surface Plasmon Resonance |
| MEPAS | Multimedia Environmental Pollution Assessment System |
| SEP | Solar Energetic Particle (event) |
| FEG | Field Emission Gun |
| HTHS | High-temperature High-shear |
| APS | Aerodynamic Particle Sizer |
| GVB-CI | Generalized Valence Bond-configuration Interaction (wave Function) |
| GWM | Groundwater Monitoring |
| USEPA | United States Environmental Protection Agency |