| Acronym | Meaning |
| OR | Odds Ratio |
| PLI | Process Loading Intensity (of Biological Reactors) |
| AMSA | Association Of Metropolitan Sewerage Agencies |
| CISC | Configuration Interaction (with) Size-consistency (correction) |
| MEDLA | Molecular Electron Density Lego Assembler |
| SBE | Starch Branching Enzyme |
| VOD | Vacuum-oxygen Decarburization |
| PTIS | Photothermal Ionization Spectroscopy |
| ELRA | Enzyme-linked Receptor Assay |
| PRT | Platinum Resistance Thermometer |