| Acronym | Meaning |
| FEM | Field Emission Microscopy |
| GIXS | Grazing Incidence X-ray Scattering |
| CC | Close Coupling Method (for Atom-molecule Collisions) |
| LCPLS | Logcontrast Partial Least Squares |
| ESID | Environmental Statistics And Information Division |
| CORMIX | Cornell Mixing Zone Model |
| EBO | Equivalent Bond Orbital |
| QCISD(T) | Quadratic CI (with) Single (and) Double (excitations) (and) [triple Excitations Added Perturbatively] |
| GSR | Gunshot Residue |
| ITC | Interagency Testing Committee (TSCA) |