| Acronym | Meaning |
| POSSUM | Protein Online Substructure Searching - Ullman Method |
| EHP | Electron-hole Plasma |
| ACIMS | Active Chemical Ionization Mass Spectroscopy |
| FLIM | Fluorescence Lifetime Imaging Microscopy |
| CHEMATA | Chem. Mechanism Adaptation To Tropospheric Applications |
| PORG | Photochemical Oxidants Review Group |
| IMPATT | Impact Avalanche Transit-time |
| BAPMON | Background Air Pollution Monitoring Network |
| ORS | Odds Ratios |
| SVC | Saturated Vapor Concentration (air Sampling) |