| Acronym | Meaning |
| BO | Born Oppenheimer |
| FAFS | Flame Atomic Fluorescence Spectroscopy |
| ABMA | American Boiler Manufacturers Association |
| WEFT | Water Elimination By Fourier Transform |
| CEFIC | European Chemical Industry Association |
| EPQU | IFCC Expert Panel On Quantities And Units |
| DZD | (double Zeta)-diffuse (basis Set In Configuration-mixing MO Calcns. On Mols.) |
| CSWRCB | California State Water Resources Control Board |
| CSHB | Chemical Safety And Hazard Investigation Board |
| MEPAS | Multimedia Environmental Pollution Assessment System |