| Acronym | Meaning |
| PPE | Personal Protective Equipment |
| MON | Motor (method) Octane No. |
| SOTE | Standard Oxygen Transfer Efficiency (of Aeration Diffusers) |
| EAM | Electron Acoustic Microscopy |
| ANA | Adiabatic Nuclei Approximation (in Electron-mol. Scattering) |
| NBMO | Nonbonded Molecular Orbital |
| SICM | Scanning Ion-conductance Microscopy |
| RCCSD | (spin) Restricted CCSD |
| HSCIE | High-temperature Solid-state Catalytic Isotope Exchange |
| FOLZ | First-order Laue Zone |