| Acronym | Meaning |
| PCI | Perturbative Configuration Interaction |
| EMP | Empirical Pseudopotential Method |
| AAFEGE | Asymptotically Adjusted Free-electron-gas Exchange (potential) |
| LPIC | Low Pressure Ion Chromatography |
| CMP | Chemical Measurement Process |
| EEM | Excitation-emission Matrix |
| HESP | Human Exposure To Soil Pollutants |
| TF/SC | Trickling Filter/Solids Contact Process (for Wastewater Treatment) |
| ICR | Information Collection Rule |
| TAG | Trans-Atlantic Geotraverse |