| Abbreviation | Definition |
|---|---|
| SI | Stability Index |
| SI | System International |
| SiC2 | Silicon Carbide |
| SICR | Shock Induced Chemical Reaction |
| SILAC | Stable Isotope Labeling with Amino Acids in Cell Culture |
| SIM | Sulfide Indole Medium |
| SIN | self-inactivating |
| SiNP | Silicon Nano-Particle |
| SIO | Silicon Oxide |
| SIO2 | Silicon Di- Oxide |
| SIOC | Shanghai Institute of Organci Chemistry |
| SIOC | Shanghai Institute Of Organic Chemistry |
| SL | Short Lived |
| SLAB | Starter Lactic Acid Bacteria |
| SLES | Sodium Laurel Ether Sulphate |
| SLES | Sodium Lauryl Ether Sulphate |
| SLI | Solid Liquid Interface |
| SLS | Sodium Lauryl Sulphate |
| SLSA | Sodium Lauryl Sulfoacetate |
| SLTC | Society of Leather Technologists and Chemists |