| Acronym | Meaning |
| MRLCC | Multireference Linearized Coupled Cluster |
| CCG | Continental Collision Granitoids |
| TFE | Thermionic Fuel Element |
| SPPD | Spin Polarized Photoelectron Diffraction |
| WSM | Watershed Model |
| CCI | Charge Contrast Imaging |
| FPM | Fine Particulate Matter |
| FIMS | Field Ionization Mass Spectrometry |
| EEA | European Environment Agency |
| TGMA | Task Group Of Metal Accumulation |