| Acronym | Meaning |
| FWPCA | Federal Water Pollution Control Administration |
| LDGUGA | Loop-driven Graphical Unitary-group Approach (in MC-SCF Calcns.) |
| GAM | Generalized Additive Model |
| AIN | American Institute Of Nutrition |
| CDM | Capacitive Discharge Mode |
| EIS | Electrochem. Impedance Spectroscopy |
| NTN | National Trends Network |
| RGB | Red Giant Branch (star) |
| TMWAM | Turkey-Mersey Watershed Acidification Model |
| APFO | Ammonium Perfluorooctanoate |