| Acronym | Meaning |
| FATES | FIRFA And TSCA Enforcement System (now Known As SSTS) |
| HMIMS | Hazardous Materials Incident Management System |
| ETS | Electron Transport System |
| PBMC | Peripheral Blood Mononuclear Cells |
| CIBL | Convective Internal Boundary Layer |
| HFFR | Halogen-free Flame Retardant [thermoplastics] |
| NAREL | National Air And Radiation Environmental Laboratory |
| IGCC | Integrated Gasification Combined Cycles (electric Power Generation Technology) |
| LEMO | Lowest Empty Molecular Orbital (equivalent To LUMO) |
| CSA | Charge Sensitivity Analysis |