| Acronym | Meaning |
| BIF | Boilers And Industrial Furnaces (USEPA Rule) |
| SCIBM | Semiclassical Infinite-barrier Model |
| NWQMC | National Water Quality Monitoring Council |
| CEAS | Cavity-enhanced Absorption Spectroscopy |
| SIG | Special Interest Group |
| OSPARCOM | Oslo And Paris Commission [Environmental Regulations For The European Community] |
| ANO | Atomic Natural Orbital |
| WHAM | Windermere Humic Aq. Acid Model |
| AEFCA | All-electron Frozen-core Approximation |
| HFET | High Field Effect Transistor |