| Acronym | Meaning |
| PVD | Physical Vapor Deposition |
| CT | Charge Transfer |
| SIP | State Implementation Plan |
| SERON | Southern Regional Oxidant Network |
| SORP | Southern Oxidants Research Program |
| UKMO | United Kingdom Meteorological Office |
| MPPCF | Millions Of Particles Per Cubic Foot |
| FEM | Finite Element Method |
| MSPR | Molecular Structure-property Relationship |
| NMDS | Nonmetric Multidimensional Scaling |