| Acronym | Meaning |
| TEQ | Toxicity Equivalent |
| VOST | Volatile Organic Sampling Train |
| SOM | Self-organizing Map |
| EUROTRAC | European Experiment Of Transport And Transformation Of Environmentally Relevant Trace Constituents In The Troposphere Over Eur |
| HRSEM | High Resolution Scanning Electron Microscopy |
| PGR | Plant Growth Regulator |
| DRI | Direct Reduced Iron |
| SAFARI | Southern African Regional Science Initiative |
| NSSDC | National Space Science Data Center |
| PLDA | Piecewise Linear Discriminant Analysis |