| Acronym | Meaning |
| OTE | Oxygen Transfer Efficiency (of Aeration Diffusers) |
| GEO | Geostationary Earth Orbit |
| TSH | (classical) Trajectory Surface Hopping (for Ion-mol. Collisions) |
| CSPI | Coherent State Path Integration |
| PIXIE | Polar Ionospheric X-ray Imaging Experiment |
| DLTFS | Deep Level Transient Fourier Spectroscopy |
| RPI | Radius Polydispersity Index |
| CBDS | Carcinogenesis Bioassay Data System |
| EXES | Electron-induced X-ray Emission Spectrometry |
| TNFR1 | Tumor Necrosis Factor Receptor 1 |