| S | Greek capital letter sigma; syphilis; summation of series |
|---|---|
| SS | disulfide; sacrosciatic; saline soak; saline solution; saliva sample; saliva substitute; Salmonella-... |
| UGIS | upper gastrointestinal series |
| ARSC | arylsulfatase C; Associate of the Royal Society of Chemistry |
| ARSPH | Associate of the Royal Society for the Promotion of Health |