| Abbreviation | Definition |
|---|---|
| SDI | Serial Digital Interface |
| SDL | Simple Direct Layer |
| SDMS | Scientific Data Management System |
| SDPD | Structure Determination from Powder Diffraction |
| SDS | Scientific Data Set |
| SDS | Sodium Dodecyl Sulfate |
| SDS | Sodium Dodecyl Sulphate |
| SDZ | SulphaDiaZine |
| Se | Selenium |
| SE | Self Emulsifying |
| SEA | Safe Emulsion Agar |
| SEFA | Structurally Engineered Fatty Acid |
| SEM | Solvent Extractable Material |
| SEM/AVS | Simultaneously-Extracted Metals/Acid Volatile Sulfide |
| SeN | Selenium Nitrogen |
| SEP | Separate |
| SEV | Several |
| SEX | Sodium Ethyl Xanthate |
| SF6 | Sulfur HexaFluoride |
| SFA | Segregated Flow Analysis |