| Acronym | Meaning |
| SAGA | Soviet American Gas And Aerosol Experiment |
| PSD | Photon Stimulated Desorption |
| IUGS | International Union Of Geological Sciences |
| PDG | Patent Documentation Group |
| HMM | Half Molecule Model (for Electron Scattering By Molecules) |
| ITC | International Translation Center |
| PFOE | Polarized First-order Exchange |
| NIGA | Neutron Induced Gamma Activity |
| DAVINS | Direct Analysis Of Very Intricate Nmr Spectra |
| EGBD | Extrinsic Grain Boundary Dislocation |