| Acronym | Meaning |
| IESWTR | Interim Enhanced Surface Water Treatment Rule |
| SVL | Single Vibrational Level |
| TBC | Two-beam Coupling |
| CEAS | Cavity-enhanced Absorption Spectroscopy |
| ASW | Artificial Seawater |
| FLDA | Fuzzy Linear Discriminant Analysis |
| USAN | US Adopted Names (for Drugs) |
| TWTDS | Treatment Works Treating Domestic Sewage |
| IDWSSD | International Drinking Water Supply And Sanitation Decade (of UN |
| HFCVD | Hot Filament Chemical Vapor Deposition |