| Acronym | Meaning |
| EMIC | Electromagnetic Ion Cyclotron (waves) |
| CAAMP | Canadian Acid Aerosol Measurement Program |
| GIRMS | Gas Isotope Ratio Mass Spectrometry |
| ASTROS | Automated Structural Optimization System |
| AOVB | Atomic Orbital Valence Bond (molecular Wave Function) |
| UCL | Upper Confidence Limit |
| OLF | Overland Flow |
| NSR | New Source Review |
| RIS | Radiation-induced Segregation |
| DWP | Dynamic Wet Pressure |