| Acronym | Meaning |
| NCWQ | National Commission On Water Quality |
| SAR | Synthetic Aperture Radar |
| RREL | Risk Reduction Engineering Laboratory |
| RFCCU | Residue Fluid Catalytic Cracking Unit |
| ELSA | Electron Stretcher Accelerator |
| HFSE | High Field Strength Element(s) |
| CL | Cathode Luminescence |
| AURA | Association Of Universities For Research In Astronomy |
| ETF | Extended Thomas-Fermi (model) |
| SUVA | Specific UV Absorbance |