| Acronym | Meaning |
| WGS | Water Gas Shift Reaction |
| PISCES | Passive In-Situ Concn. Extn. Sampler |
| HSG | Human Salivary Gland |
| REMPI | Resonance-Enhanced Multiphoton Ionization (for Mass Spectrometry) |
| LASA | Lidar Atmospheric Sounder And Altimeter |
| BIPM | Bureau International Des Poids Et Mesures |
| TCSPC | Time-correlated Single-photon Counting |
| APS | Ammonium Persulfate |
| HIRIS | High Resolution Imaging Spectrometer |
| VOST | Volatile Organic Sampling Train |