| Acronym | Meaning |
| PTD | Probable Toxic Dose |
| RCM | Rotated-coordinate Method |
| CFSE | Crystal Field Stabilization Energy |
| EIAP | Environmental Impact Analysis Process |
| CD | Centrifugal Decoupling Approximation (for Atom-mol.scattering) |
| SIMOX | Separation By Implanted Oxygen |
| SHEBA | Surface Heat Budget Of Arctic Ocean |
| EIIP | Emission Inventory Improvement Program |
| FOS | First-order Sudden |
| HSIA | Halogenated Solvents Industry Alliance |