| SI | International System of Units [Fr. le Systeme International d'Unites]; sacroiliac; saline infusion; ... |
|---|---|
| s | Greek lower case letter sigma; conductivity; cross section; millisecond; molecular type or bond; pop... |
| SIH | stimulation-induced hypalgesia; stress-induced hyperthermia; suction-induced hypoxemia |
| SMI | Self-Motivation Inventory; senior medical investigator; severe mental impairment; silent myocardial ... |
| SR | sarcoplasmic reticulum; saturation recovery; scanning radiometer; screen; secretion rate; sedimentat... |