| Acronym | Meaning |
| CIGARS | Calibrated Infrared Ground/air Radiometric Spectrometer |
| WFGD | Wet Flue Gas Desulfurization |
| NEGF | Nonequilibrium Green Function |
| SOLSTICE | Solar Stellar Irradiance Comparison Experiment |
| TMP | Turbomolecular Pump |
| LITD | Lased Induced Thermal Desorption |
| DI | Direct Injection (engine; Diesel) |
| CXAES | Continuous X-ray-induced Auger Electron Spectroscopy |
| NATA | National Air Toxics Assessment |
| TOM | Transition Operator Method |