| REEDS | retention of tears, ectrodactyly, ectodermal dysplasia, and strange hair, skin and teeth [syndrome] |
|---|---|
| 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-... |