| Acronym | Meaning |
| SFRC | Spruce-Fir Research Cooperative |
| EVA | Ethylene-vinyl Acetate Copolymer |
| PIXE | Particle Induced X-ray Emission |
| AREAL | Atmospheric Research And Exposure Assessment Laboratory |
| HMM | Hidden Markov Model |
| CODATA | Committee On Data For Science And Technology |
| PSI-BLAST | Position-specific Iterated BLAST |
| MHEMT | Metamorphic High Electron Mobility Transistor |
| RPEHMO | Relativistically Parametrized Extended Hueckel MO |
| WARMF | Watershed Anal. Risk Management Framework |