| Acronym | Meaning |
| GMO | Group Molecular Orbital |
| SGGA | Symmetric Group Graphical Approach (in CI Calcns.) |
| DWBE | Distorted-wave Born (approxn. With) Exchange |
| MB-SAPT | Many Body-symmetry Adapted Perturbation Theory |
| SEDOR | Spin-echo Double Resonance |
| NAAQS | National Ambient Air Quality Standards |
| DIC | Disseminated Intravascular Coagulation |
| NPS | National Park Service (US) |
| LIFR | Leukemia Inhibitory Factor Receptor |
| DUV | Deep Ultraviolet |