| Rs | Rauwolfia serpentina; systemic resistance |
|---|---|
| Rsa | systemic arterial resistance |
| SA | salicylic acid; saline [solution]; salt added; sarcoidosis; sarcoma; scalenus anticus; secondary ame... |
| SAI | Self-Analysis Inventory; Sexual Arousability Inventory; Social Adequacy Index; suppressor of anchora... |
| SAP | sensory action potential; serum acid phosphatase; serum alkaline phosphatase; serum amyloid P; situs... |