| Acronym | Meaning |
| FLCAO | Factorized LCAO |
| AAL | Acceptable Ambient Level(s) |
| RVLM | Rostral Ventrolateral Medulla |
| IEHMO | Iterative Extended Hueckel Molecular Orbital |
| CCCI | Correlation-consistent CI |
| AAD | Atomic Absorption Detector |
| HSWA | Hazardous And Solid Waste Amendments Of 1984 |
| GEH | Generalized Effective Hamiltonian |
| BILE | Beam Induced Light Emission |
| FETI | Fire, Explosion And Toxicity Index |