| Acronym | Meaning |
| MSR | Mammalian Selectivity Ratio |
| EIF | Electron Impact Fluorescence |
| U.S.C. | United States Code |
| PIMIA | Potentiometric Ionophore-modulation Immunoassay |
| ALR | Airlift-loop Reactor |
| GWSS | Groundwater Supply Survey |
| JAXA | Japan Aerospace Exploration Agency |
| LPS | Liquid-phase Sintering |
| XRD | X-ray Diffraction Analysis |
| DTG | Differential Thermogravimetry |