| Acronym | Meaning |
| CTM | Chemical Transport Model |
| PONA | Paraffins, Olefins, Naphthalenes, And Aromatics (in Petroleum Analysis) |
| EEC | European Economic Community |
| PERC | Passivated Emitter And Rear Cell (solar Cells) |
| LOTOS | Long Term Ozone Simulation |
| GAIN | Global Agricultural Information Network |
| IT | Integral Transform |
| ECC | Electrokinetic Capillary Chromatography |
| IHSI | Induction Heating Stress Improvement |
| SMIL | Synchronized Multimedia Integration Language |