| Acronym | Meaning |
| IUPPA | The International Union Of Air Pollution Prevention Associations |
| TRCF | Transcription-repair Coupling Factor |
| CNDO/IP | Complete Neglect Of Differential Overlap/ionization Potential |
| CCI | Charge Contrast Imaging |
| TXRF | Total Reflection X-ray Fluorescence |
| FRP | Fiberglass Reinforced Plastic |
| SQW | Single Quantum Well |
| TOD | Theoretical Oxygen Demand |
| CIRS | Composite Infrared Spectrometer |
| MCSCRF | Multiconfigurational Self-consistent Reaction Field |