| Acronym | Meaning |
| PNP | Purine Nucleoside Phosphorylase |
| PMN | Polymorphonuclear Leukocyte |
| CASV-MC-SCF | Complete Active Space Valence Space-multiconfiguration-SCF |
| LAWG | Laboratory Accreditation Working Group |
| VEO | Valence Electron Only |
| AFBBR | Anaerobic Fluidized Bed Biofilm Reactor |
| SSRTF | Solid Surface Room Temperature Fluorescence |
| TSI | Trophic State Index |
| DPR | California Department Of Pesticide Regulation |
| PNDDO | Partial Neglect Of Diatomic Differential Overlap |