| Acronym | Meaning |
| APSG | Antisymmetrized Product Of Spin Geminals Method |
| CAST | Cyclic Activated Sludge Technol. |
| DWPO | Distorted Wave Polarized Orbital |
| ECSTM | Electrochemical Scanning Tunneling Microscopy |
| AETM | Analytical Electron Transmission Microscopy |
| EIH | Electron Ion Hybrid |
| SKVP | S-matrix (version Of) Kohn Variational Principle |
| EIRFT | Extended Inversion-recovery Fourier Transform |
| EIP | Electric Induced Polarization (for Subsurface Characterization) |
| SPFS | Surface Plasmon Fluorescence Spectroscopy |