| Acronym | Meaning |
| UASBR | Upflow Anaerobic Sludge Blanket Reactor |
| SHM | Screened Hydrogenic Model (for Electronic Structure In Plasmas) |
| SAPW | Symmetrized Augmented Plane Wave |
| EAM | Electron Acoustic Microscopy |
| EQS | Environmental Quality Standard |
| SPEMC-SCF | Selected Paired Excitational Expansion Multiconfiguration-SCF |
| SCA-QD-MBPT | Self-consistently Adapted (core Reference State) Quasidegenerate Many-body Perturbation Theory |
| CPR | Cytochrome P 450 Reductase |
| IDSRS | Ionization-detected Stimulated Raman Spectroscopy |
| MDS | Metastable Deexcitation Spectroscopy |