| Acronym | Meaning |
| FRED | Flexible Regional Emissions Data System |
| ICAO | International Civil Aviation Organization |
| EXPRESSO | Experiment For Regional Sources And Sinks Of Oxidants |
| ACPAR | Angular Correlation Of Positron Annihilation Radiation |
| ACRR | Annular Core Research Reactor |
| ISVM | Iterative Schwinger Variational Method |
| ERPG | Emergency Response Planning Guidelines |
| MTF | Multiple Tube Fermentation |
| SSOP | Sequence Specific Oligonucleotide Probe |
| ACF | Autocorrelation Function |