| Abbreviation | Definition |
|---|---|
| S | Substrate |
| S | Sulfur |
| S | sulphur |
| s.g. | specific gravity |
| SA | Silver Azide |
| SAA | Set Accelerating Agent |
| SAA | Standard Aggregate Au (Gold) |
| SAA | Stop Acid Attack |
| SAA | Sugar Amino Acid |
| SAA | Surface Active Agent |
| SAAP | Single Amino Acid Polymorphism |
| SAC | Strong Acid Cation |
| SAC | Sulfuric Acid Concentration |
| SACI | Sales Association of the Chemical Industry |
| SACI | South African Chemical Institute |
| SADCA | State Acid Deposition Control Act |
| SAF | Surficial Amorphous Film |
| SAICE | South African Institute of Chemical Engineering |
| SAM | S-adenosylmethionine |
| SAM | Self-Assembled Monolayer |