| Acronym | Meaning |
| DET | Direct Nonradiative Electronic Energy Transfer |
| COP | Coefficient Of Performance |
| GEF | Guanine Nucleotide Exchange Factor |
| MSFC | Marshall Space Flight Center |
| DIGS | Disorder-induced Gap State |
| CBOX | Coulomb-Born With No Exchange |
| OAR | Office Of Air And Radiation (USEPA) |
| CVSEH | Correlated Valence Shell Effective Hamiltonian |
| ZCC | Zero Core Contribution (model For Photodetachment Calcns.) |
| SOEH | Scaled One-electron Hamiltonian (in SCF Calcns. On Mols.) |