| R&R | rate and rhythm; rest and recuperation |
|---|---|
| S&A | sickness and accident [insurance]; sugar and acetone |
| SAD | Scale of Anxiety and Depression; seasonal affective disorder; Self-Assessment Depression [scale]; se... |
| SS | disulfide; sacrosciatic; saline soak; saline solution; saliva sample; saliva substitute; Salmonella-... |
| STP | phenol-preferring sulfotransferase; scientifically treated petroleum; sodium thiopental; standard te... |