| Acronym | Meaning |
| ADARD | Acid Deposition And Atmospheric Research Division |
| NFCR | National Foundation For Cancer Research |
| MST | Multiple Scattering Theory |
| MBPM | Maximum Bubble Pressure Method |
| SCADS | Superfund Chemical Analysis Data System (see CARD) |
| IGFA | Inert Gas Fusion Analysis |
| RMLC | Recommended Maximum Contaminant Level |
| WEF | Water Environment Federation (formerly WPCF) |
| HAZOP | Hazard And Operability Study |
| ETB | Extended Tight-binding (method For Electronic-structure Calcns.) |