| SFD | silo filler's disease; skin-film distance; small for dates; spectral frequency distribution |
|---|---|
| SGA | small for gestational age |
| SIG | small inducible gene |
| SISS | Sentinel Injury Surveillance System [for Gunshot and Stab Wounds] small inducible secreted substance... |
| SL | sarcolemma; sclerosing leukoencephalopathy; secondary leukemia; segment length; sensation level; sen... |