| Acronym | Meaning |
| TTU | Transportable Treatment Unit |
| DAS | Dendrite Arm Spacing |
| PCV | Positive Crankcase Ventilation |
| MLPCA | Maximum Likelihood Principal Component Analysis |
| ACD | Available Chemicals Directory |
| SUCCESS | Subsonic Aircraft: Contrail And Cloud Effects Special Study |
| CAICISS | Coaxial Impact Collision Ion Scattering Spectroscopy |
| CHES | 3-(cyclohexylamino)ethylsulfonic Acid |
| CAK | Cdk-activating Kinase |
| UMP | Unrestricted Moeller-Plesset |