| Abbreviation | Definition |
|---|---|
| SMW | Schweizerische Medizinische Wochenschrift |
| SMZ | Sulfamethoxazole |
| SNAP | Smoking Nutrition Alcohol And Physical |
| SNAP | Smoking, Nutrition, Alcohol, and Physical |
| SNAP | Supporting Neurotransmitter Activity And Production |
| SNB | Sentinel Node Biopsy |
| SND | Sinoatrial Nasal Dysfunction |
| SNI | Selective Nerve root Injection |
| SNIS | Spinal Nerve Injection Study |
| SNM | Symptoms of Neurological Mayhem |
| SNP(s) | single nucleotide polymorphism(s) |
| SNPs | single nucleotide polymorphisms |
| SNRI | Serotonin And Noradrenaline Reuptake Inhibitor |
| SNRI(s) | Serotonin-norepinephrine reuptake inhibitor |
| SNS | Sympathetic nervous system |
| SNST | Sciatic nerve stretch test |
| SNT | Sinuses, Nose, and Throat |
| SNT | Soft, Non-Tender |
| SNV | Sin Nombre Virus |
| SNZ | Snooze |