| Acronym | Meaning |
| SI | Scale Index |
| FAGS | Federation Of Astronomical And Geophysical Services |
| LBW | Laser-beam Welding |
| TNF | Tumor Necrosis Factor-alpha |
| BSEM | Back Scattering Electron Microscopy |
| EM | Electron Microscopy |
| ASEHF | Approximate Spin-extended Hartree-Fock |
| DOP | Dioctyl Phthalate |
| STM | Symptom Tree Model |
| SHEED | Scanning High-energy Electron Diffraction |