| Acronym | Meaning |
| PR | Preliminary Review |
| IUTOX | International Union Of Toxicology |
| LEL | Lowest Effect Level |
| ECCF | Equilibrium Charge-charge Flux (model In Ir Spectra Calcns.) |
| DCCI | Dissociation-consistent Configuration Interaction |
| CNT | Carbon Nanotube |
| HWRIC | Hazardous Waste Research And Information Center |
| MCSCO | Multiconfiguration Self-consistent Orbital |
| IRES | Internal Ribosome Entry Site |
| LST | Local Solar Time |