| Acronym | Meaning |
| NRMPI | Non-resonant Multiphoton Ionization |
| OGWDW | Office Of Ground Water And Drinking Water |
| MUCA | Molecular Unit Cell Approxn. |
| G2 | Gaussian-two (an Ab Initio Mo Theory For Mol. Energies Calcn.) |
| ISO | IR Space Observatory |
| MEPSAG | Minimum Energy Path Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| FOG | Fats, Oil, And Grease |
| FOCSY | Foldover-corrected Correlation Spectroscopy |
| TSM | Thickness Shear Mode |
| CCA | Crystalline Cluster Approach (in Electronic Structure Calcns.) |