| Acronym | Meaning |
| GS | Gelius-Siegbahn (MO Approxn.) |
| CPT | Coulomb Wave-plane Wave (description With) Truncated (treatment) |
| ADT | Air Dry Ton [of Cellulose Pulp] |
| ASTRAP | Advanced Statistical Trajectory Regional Air Pollution Model |
| CD ROM | Compact Disk Read Only Memory |
| EUSIDIC | European Society For Information Dissemination In Chemistry |
| UMINDO | Spin-unrestricted Modified Intermediate Neglect Of Differential Overlap |
| MAM | Modified Atoms (in) Molecules |
| IGF | Irreducible Green Function |
| EEXAPS | Electron Excited X-ray Appearance Potential Spectroscopy |