| Acronym | Meaning |
| EXPOLIS | Air Pollution Exposure Distribution Within Adult Urban Populations In Europe |
| HFP | Hartree-Fock Perturbation |
| LRTAP | Long-range Transboundary Air Pollution |
| PTA | Pulse Thermal Analysis |
| MSF | Multi-stage Flash Distillation Plant |
| IMPROVE | Interagency Monitoring For Protected Visual Environments |
| BIS | Bispectral Index |
| CIESE | Combined Ion Exchange-solvent Extraction |
| RMC | Reverse Monte Carlo |
| NCASI | National Council For Air And Stream Improvement |