| Acronym | Meaning |
| AWRA | American Water Resources Association |
| NDB | Nucleic Acid Database |
| GCSF | Granulocyte Colony-stimulating Factor |
| E2PROM | Electrically Erasable Programmable Read Only Memory |
| HAL | Health Advisory Level |
| IEPA | Illinois Environmental Protection Agency |
| HIMU | High U/Pb Mantle (component) |
| MIA | Multivariate Image Analysis |
| DDRPA | Double Direct Random Phase Approximation |
| PWEM | Partial-wave-expansion Method (in Electron Scattering Calcns.) |