| Acronym | Meaning |
| SREBP | Sterol Regulatory Element Binding Protein |
| MCDF-EAL | Multiconfiguration Dirac-Fock-extended Average Level (for Energy Levels And Wave Functions Calcn. For Atoms) |
| IFPM | Independent Fermi Particle Model (in Atom-ion Impact Ionization) |
| BAMGAR | Barium Magnesium Germanate Garnet |
| ACPF | Averaged Coupled Pair Functional |
| CEPT | Cholesterol Ester Transfer Protein |
| STOL | Short Take-Off And Landing |
| DDIM | Dry Deposition Inferential Monitoring |
| ISCST | Industrial Source Complex Short Term Model (US EPA) |
| XES | X-ray Emission Spectroscopy |