| Acronym | Meaning |
| NAPAP | National Acid Precipitation Assessment Program |
| EDA | Ethylene Diamine |
| FEN | Free Electron Network |
| UIHRS | Upflow Inclined High-rate Settlers |
| MVFF | Modified Valence Force Field |
| SPMP | Scanning Proton Microprobe |
| BBIC | Bioluminescent Bioreporter Integrated Circuits |
| PTGF | Perturbative-type Green Function |
| FSR | Free Spectral Range |
| RDF | Refuse Derived Fuel |