| Acronym | Meaning |
| PIET | Photoinduced Intramolecular Electron Transfer |
| PSS | Primary Sewage Sludge |
| SCCE | Synchronized Cyclic Capillary Electrophoresis |
| NEPP | National Energy Policy Plan |
| PROX | Preferential CO Oxidn. |
| SAS | Small Angle Scattering |
| CPOM | Coarse Particulate Organic Matter |
| AAU | Amendment To Allege Use |
| HETP | Height Equivalent To A Theoretical Plate |
| FEOE | Full Equalization Of Orbital Electronegativity |