| Acronym | Meaning |
| PP | Polarization Propagator |
| INS | Inelastic Neutron Scattering |
| MEPSAG | Minimum Energy Path Semiclassical Adiabatic Ground-state (tunneling Approxn.) |
| QR-MWH | Quasi-relativistic Mulliken-Wolfsberg-Helmholz Method |
| TDSHF | Time-dependent Screened Hartree-Fock |
| SME | Shape Memory Effect |
| EER | Excess Emission Report |
| TAL | Threshold Ambient Level |
| IFSEM | International Federation Of Societies For Electron Microscopy |
| RFE | Relative Fit Error |