| Acronym | Meaning |
| SCDM | Self-consistent Diagrammatic Method (in Calcn. On Electronic Excitation Transfer) |
| MBSS | Molecular Beam Surface Scattering |
| QDPT | Quasi-degenerate Perturbation Theory |
| CBSA | Chlorobenzenesulfonic Acid |
| HI | Hydrogen Index |
| ANDI | Analytical Data Interchange |
| RDF | Radial Distribution Function |
| TSDRF | Treatment, Storage, Disposal, And Recycling Facilities |
| ANSI | American National Standards Institute |
| FVEH | Fragment Valence Effective Hamiltonian (in Electronic-structure Calcns. On Mol. Fragments) |