| S | Greek capital letter sigma; syphilis; summation of series |
|---|---|
| Sp | the most posterior point on the posterior contour of the sella turcica; species; specific; specimen;... |
| CRT | cadaveric renal transplant; cardiac resuscitation team; cathode-ray tube; certified; Certified Recor... |
| ET | educational therapy; effective temperature; ejection time; embryo transfer; endothelin; endotoxin; e... |
| MRT | magnetic resonance tomography; maximum relaxation time; median range score; median reaction time; me... |