| Acronym | Meaning |
| PTD | Protein Transduction Domain |
| UHV | Ultra High Vacuum |
| SMBC | Soil Microbial Biomass Carbon |
| HSCR | Hirschsprung Disease |
| CAD | Coronary Artery Disease |
| MORT | Molecular Orbital Resonance Theory |
| CCI | Chronic Constriction Injury |
| DEGM | Degenerate Electron Gas Model |
| SCI | Super Configuration Interaction |
| BWEN | Brillouin-Wigner (second-order Perturbation Theory With) Epstein-Nesbet (energy Denominators) |