| Abbreviation | Definition |
|---|---|
| SSR | Sympathetic skin response |
| SSRI | Selective Sereotonin Reuptake Inhibitor |
| SSRI | Selective Serotonin Reuptake Inhibitor |
| SSRI(s) | Selective serotonin re-uptake inhibitors |
| SSRT | Sympathetic Skin Response Test |
| SSS | Sick Sinus Syndrome |
| SSSS | Staphylococcal Scalded Skin Syndrome |
| SST | Simple Shoulder Test |
| SSVA | Second Stage Vision A |
| ST | Esotropia |
| ST | Scala Tympani |
| ST | See And Treat |
| ST | Sexually Transmitted |
| ST | Shock therapy |
| ST | Skeletal Traction |
| ST | Slight Trace |
| ST | Speech Therapy |
| ST | Spontaneous Timed |
| ST | Stage Of Disease |
| ST | Stent Thrombosis |