| Acronym | Meaning |
| UF | Uncertainty Factor (in Oral RfD) |
| IAHR | International Association For Hydraulic Research |
| DCMD | Direct Contact Membrane Distillation |
| FWA | Fluorescent Whitening Agent |
| ASEMP | Active Sites Environmental Monitoring Program |
| APMI | American Powder Metallurgy Institute |
| ECF | Electric Crystal Field |
| QLSM | Quadratic Least-squares Method (variational For Scattering) |
| SONN | Self-organizing Neural Network |
| HFET | Highway Fuel Economy Test |