| Acronym | Meaning |
| FRED | Flexible Regional Emissions Data System |
| PAS | Periodic Acid Schiff |
| RFIE | Reverse Flow Ion Exchange |
| CH-CI | Core Hole Configuration Interaction |
| CGL | Comprehensive General Liability Policy |
| ISS | Ion Scattering Spectroscopy |
| IMS | Ion Mobility Spectrometry |
| HRXPS | High Resolution X-ray Photoelectron Spectroscopy |
| GEM | Gas Electron Multiplier |
| ILIDS | Interferometric Laser Imaging For Droplet Sizing |