| Acronym | Meaning |
| UCAR | University Corporation For Atmospheric Research |
| GHF | Generalized Hartree-Fock Method |
| PTR | Proton Transfer Reaction |
| IEHMO | Iterative Extended Hueckel Molecular Orbital |
| PCM | Polarizable Continuum Model |
| VBXES | Valence Band X-ray Emission Spectroscopy |
| ASPG | Antisymmetrized Product Of Separated Geminals Approxn. |
| KKR | Korringa-Kohn-Rostoker (in Band Structure Calcn.) |
| PETN | Pentaerythritol Tetranitrate |
| LVDT | Linear Variable Differential Transformer |