| Acronym | Meaning |
| AREAL | Atmospheric Research And Exposure Assessment Laboratory |
| CEEL | Community Emergency Exposure Level |
| AOMA | American Occupational Medical Association |
| EHS | Extremely Hazardous Substance |
| ECCS | Electro-coated Chromium Steel |
| PRDDO | Partial Retention Of Diatomic Differential Overlap |
| CCPE | Charge Core Potential Energy Method (for Conformational Analysis) |
| VBSCF | Valence Bond Self-consistent Field |
| CEPM | Coupled Electron Pair Method |
| CFFV | Clean Fuel Fleet Vehicle |