| Acronym | Meaning |
| NVFEL | National Vehicle And Fuel Emissions Laboratory |
| CWISE | Coated-wire Ion-selective Electrode |
| GUGA | Graphical Unitary Group Approach |
| PGA | Prostaglandin A |
| STRAT | Stratospheric Tracers Of Atmospheric Transport |
| LRTAP | Long-range Transboundary Air Pollution |
| UST | Underground Storage Tank |
| PPQ | Parts Per Quadrillion |
| RQCISD | (spin) Restricted QCISD |
| PIAMS | Photoionization Aerosol Mass Spectrometry |