| Acronym | Meaning |
| MED | Minimal Erythema Dose |
| REM | Rapid Eye Movement |
| ATH | Aluminum Trihydrate |
| SIRIS | Sputter-initiated Resonance Ionization Spectroscopy |
| SXM | Scanning X-ray Microscope |
| IACUC | Institutional Animal Care And Use Committeepar |
| CHIEF | Clearinghouse For Inventories And Emission Factors |
| LST | Laser Scattering Tomography |
| DDF | Depth Distribution Function |
| RAC | Reference Air Concentration (USEPA) |