| Acronym | Meaning |
| LEPC | Local Emergency Planning Committee |
| ROHF | Restricted Open-shell Hartree-Fock |
| TIMI | Thrombolysis In Myocardial Infarction |
| SABS | South African Bureau Of Standards |
| DQ-MBPT | Double And Quadruple Excitation Diagrams In Many-body Perturbation Theory |
| AAA | Abdominal Aortic Aneurysm |
| PCT | Photoinduced Charge Transfer |
| LEMAO | Least Energy Minimal Atomic Orbital |
| BQMCT | Basis Quantum Monte-Carlo Theory (for Many Electron Systems) |
| TACE | Tumor Necrosis Factor Alpha-converting Enzyme |