| Acronym | Meaning |
| SAMA | Scientific Apparatus Makers Association |
| MPN | Most Probable Number |
| EU | Enzyme Unit |
| SOBO | Spin-orbit (coupled) Bond Orbital |
| LVM-ST | Least-squares Variational Method (involving Only) Square-integrable (test Functions) (for Wave Functions In Scattering) |
| LASP | Laboratory For Atmospheric And Space Physics |
| RCM | Ring-closing Metathesis |
| GCLSDA | Gradient-corrected Local Spin Density Approximation |
| ESA-IRS | European Space Agency-Information Retrieval Service |
| CFAES | Carbon Furnace Atomic Emission Spectrometry |