| Acronym | Meaning |
| SCBSA | Self-consistent Boundary-site Approxn. (for D.-of-states) |
| PSHF | Pseudospectral Hartree-Fock |
| UMIX | User-Manufacturer Information EXchange |
| ELLAP | Environmental Lead Laboratory Accreditation Program |
| NDDO | Neglect Of Diatomic Differential Overlap |
| SMILES | Simplified Molecular Input Line Entry System |
| B2B | Boundary(-corrected) Second Born (for Scattering) |
| CTPV | Coal Tar Pitch Volatiles |
| VBXES | Valence Band X-ray Emission Spectroscopy |
| GEMS | Global Environmental Monitoring Systems |