| Acronym | Meaning |
| QDVPT | Quasidegenerate Variational Perturbation Theory |
| ITS | Internal Transcribed Spacer |
| GME | Generalized Master Equation (in Quantum Statistical Mechanics) |
| IAP | Ion Activity Products |
| SUE | Sudden Expansion Burner |
| USPIO | Ultrasmall Superparamagnetic Iron Oxide |
| FPEIS | Fine Particulate Emissions Information System |
| TMIC | Toxic Materials Information Center |
| DXRD | Dynamic X-ray Diffraction |
| LASIK | Laser-assisted In Situ Keratomileusis |