| Acronym | Meaning |
| POU | Point Of Use |
| PQCD | Perturbative Quantum Chromodynamics |
| FAS | Fatty Alcohol Sulfates (surfactants) |
| NPDOC | Non-purgeable Dissolved Organic Carbon |
| DSO-GF | Diagonal Second Order (approxn. To)-Green Function |
| SMDE | Static Mercury Drop Electrode |
| FCF | Franck-Condon Factor |
| MPI | Modified Perturbation Iteration |
| PEMFC | Proton Exchange Membrane Fuel Cell |
| ISEC | Inverse Steric Exclusion Chromatography |