| Acronym | Meaning |
| NGDC | National Geophysical Data Center |
| TRIS | Toxic Release Inventory System |
| RLS | Resonance Light Scattering |
| AEA-MO | All-electron Approxn.-mol. Orbital |
| SPMC | Stationary Phase Monte Carlo |
| SCGE | Single Cell Gel Electrophoresis |
| LEMO | Lowest Empty Molecular Orbital (equivalent To LUMO) |
| MCAO | Middle Cerebral Artery Occlusion |
| URF | Unit Risk Factor |
| IDLH | Immediately Dangerous To Life Or Health |