| Acronym | Meaning |
| DWEL | Drinking Water Equivalent Level |
| ACR | Acute-Chronic Toxicity Ratio |
| RAS | Reflectance Anisotropy Spectroscopy |
| VCE | Vapor Cloud Explosion |
| PFBC | Pressurized Fluidized-bed Combustion (in Energy Technology) |
| SOLAS | Surface Ocean-lower Atmosphere Study |
| SO SCF | Spin-optimized Self-consistent Field |
| LC | Lethal Concentration |
| BRCA1 | Breast Cancer Gene 1 |
| INDC | International Nuclear Data Committee |