| Acronym | Meaning |
| OWEC | Office Of Wastewater Enforcement And Compliance |
| NOX | Nitrogen Oxides |
| VCM | Variational Cellular Method (for Electronic Structure Calcns.) |
| QUAL2E | Enhanced Stream Water Quality Model |
| ADL | Analytical Detection Limit |
| WWAP | World Water Assessment Programme |
| FGR | Flue Gas Recirculation |
| WAMMAS | Waste Minimization Management Advisory System |
| TQCM | Temperature-controlled Quartz Crystal Microbalance |
| AAMI | Association For The Advancement Of Medical Instrumentation |