| Abbreviation | Definition |
|---|---|
| SE | Solvent Extraction |
| SE | Sub-clinical Encephalopathy |
| SEAD | Study Of Estrogen Activity And Development |
| SEARCH | Scan, Examine, Act, Review, Connect, and Hunt |
| SEB | Staphylococcal Enterotoxin B |
| SEC | Specimen Exchange Chamber |
| seg(s) | segmented neutrophilic white blood cell(s) |
| SEL | Schweitzer Engineering Laboratories |
| SEL | Systematic Entomology Laboratory |
| SELB | Science and Engineering Laboratory Builing |
| SEP | Salmonid Enhancement Program |
| SEP | Smallpox Eradication Program |
| SER | Somatosensory-evoked responses |
| SERL | Software Engineering Research Laboratory |
| SERL | Survey and Evaluation Research Laboratory |
| SERL | Systems Engineering Research Laboratory |
| SERO | serologic typing |
| SES | Sanitarium Epidemic Station |
| SFK | SRC- Family protein tyrosine Kinase |
| SFR | Small Fluidal Round |