| Acronym | Meaning |
| 2PH TDA | Two-particle-hole Tamm-Dancoff Approximation (for Closed-shell |
| SDLTS | Scanning Deep-level Transient Spectroscopy |
| LCI | Life Cycle Inventory |
| ALD | Approximate Lethal Dose |
| BEWS | Biological Early Warning Systems |
| EPM | Empirical Pseudopotential Method |
| HGNC | HUGO Gene Nomenclature Committee |
| IRC | Information Resource Center |
| ESR | Erythrocyte Sedimentation Rate |
| G2 | Gaussian-two (an Ab Initio Mo Theory For Mol. Energies Calcn.) |