| Acronym | Meaning |
| AS | Activated Sludge |
| BLMO | Boys Localized Molecular Orbital |
| USGCRP | U.S. Global Change Research Program |
| SD-POE | Sigma-dependent Pi-orbital Electronegativity Model |
| RITS | Radiatively Important Trace Species |
| ZDT | Zero Ductility Temperature |
| HMWMC | Hazardous Materials And Waste Management Consortium |
| ECSXRF | Electrochemisorption X-ray Fluorescence |
| QSAR | Quantitative Structure-activity Relationship(s) |
| CCOHS | Canadian Centre For Occupational Health And Safety |