| Acronym | Meaning |
| AFCOP | Active Filler-controlled Pyrolysis |
| HKS | Hohenberg-Kohn-Sham (quantum Theory) |
| FEA | Field Emitter Array |
| OPSE | Optically Pumped Stimulated Emission |
| IRAS | Infrared Astronomy Satellite |
| TSNA | Tobacco-specific Nitrosamines |
| PIMIA | Potentiometric Ionophore-modulation Immunoassay |
| EIP | Electric Induced Polarization (for Subsurface Characterization) |
| FOS | First-order Sudden |
| HMSA | Hybrid Mean Spherical Approximation |