| Acronym | Meaning |
| ASASP | Active Scattering Aerosol Spectrometer Probe |
| HGAFS | Hydride Generation Atomic Fluorescence Spectrometry |
| CBS | Cystathionine Beta-synthase |
| ELSA | Emergency Level Scale Assessment |
| EHCO | Extended Hueckel Crystal Orbital |
| ECNI | Electron Capture Negative Ionization |
| TEY | Total Electron Yield |
| CVOC | Chlorinated Volatile Organic Compound |
| LHDC | Lube Hydrocracking Distillate Catalyst |
| COMFA | Comparative Molecular Field Analysis |