| Acronym | Meaning |
| HAO | Hydrogenic Atomic Orbital |
| AFBC | Atmospheric Fluidized Bed Combustion |
| OPPT | Office Of Pollution Prevention And Toxics (US EPA) |
| SDTQ-MBPT | Single-double-triple-quadruple Excitation (contribution) MBPT |
| ITMS | Ion Trap Mass Spectrometer |
| NNDO | Neglect Of Nonbonded Differential Overlap |
| AWT | Advanced Wastewater Treatment |
| EBSM | Extended Breathing Shell Model |
| OCCSD | Open-shell Coupled-cluster (with) Single (and) Double (excitations) |
| SH3 | Src Homology 3 |