| Acronym | Meaning |
| PONA | Paraffins, Olefins, Naphthalenes, And Aromatics (in Petroleum Analysis) |
| ATES | Aquifer Thermal Energy Storage |
| IECA | International Erosion Control Association |
| ATAD | Auto Thermal Aerobic Digestion |
| HITC | 1,1',3,3,3',3'-hexamethylindotricarbocyanaine Iodide |
| FEF | Forced Expiratory Flow (lung Function) |
| HSAB | Hard And Soft Acids And Bases |
| EIS | Environmental Impact Statement |
| NAPPA | Nucleic Acid Programmable Protein Array |
| CDOM | Colored Dissolved Organic Matter |