| Abbreviation | Definition |
|---|---|
| SAM | Spin Angular Momentum |
| SAO | University of St, Andrews - 1 |
| SAPU | Spectrophotometric Acid Protease Units |
| SAR | Structure-Activity Relationship |
| SARA | Scanning Analysis Response Assessment |
| SARM | Standard Analytical Reference Material |
| SARNA | Small Activating Ribonucleic Acid |
| SAS | Saturated Ammonium Sulphate |
| SAS | Solvent Accessible Surface |
| SAS | University of St. Andrews - 6 |
| SASD | Sialic Acid Storage Disorders |
| SASP | Small Acid Soluble Protein |
| SAT | Stages And Tranformations |
| SAT | University of St. Andrews - 2 |
| SATP | Standard Ambient Temperature and Pressure |
| SAV | Standard Average Volume |
| Sb | antimony |
| Sb | Antimony (Stibium) |
| SB | Solvent Based |
| SBA | Strong Base Anion |