| Acronym | Meaning |
| PAHO | Pan American Health Organization |
| GWB | Gopinathan-Whitehead-Bogdanovic (Fermi-hole Parameters) |
| CV | Coeff. Of Variation |
| ZLC | Zero Length Column |
| BSE | Backscattering Electrons |
| IMPROVE | Interagency Monitoring For Protected Visual Environments |
| INSIPID | Inadequate Sensitivity Improvement By Proton Indirect Detection |
| S-MPPT | Supermolecular Moeller-Plesset Perturbation Theory |
| SEDEX | Sedimentary Exhalative |
| TDM | Time-division Multiplexing |