| Acronym | Meaning |
| MSA | Mean Spherical Approxn. |
| IMAGE | International Monitor For Auroral Geomagnetic Effects |
| QDIP | Quantum Dot Infrared Photodetector |
| NTU | Nephelometric Turbidity Unit |
| PTEN | Phosphatase And Tensin Homolog (mutated In Multiple Advanced Cancers 1) |
| ICC | Ignition Control Compound |
| MCNP | General Monte Carlo Code For Neutron And Photon Transport |
| RH | Relative Humidity |
| RERS | Resonance-enhanced Raman Scattering |
| FMAP | Fano-Macek Alignment Parameter (in Electron-impact Excitation Of Ions) |