| Acronym | Meaning |
| ANITA | Ammonia And Nitrification Analyzer |
| CESE | Complex Eigenvalue Shroedinger Equation |
| HLAO | High-lying Antibonding Orbital |
| RPI | Radius Polydispersity Index |
| SCRPA | Separated Channel RPA |
| EMSA | Electron Microscopy Society Of America |
| MIONP | Microwave Induced Optical Nuclear Polarization |
| NAIP | Non-Apatite Inorganic Phosphorus |
| AOP | Advanced Oxidation Processes (hydroxyl Generation) |
| IGT | Institute Of Gas Technology |