| SNR | Signal to noise ratio |
|---|---|
| SNr | Substantia nigra pars reticulata |
| SNR | substantia nigra |
| SNR | substantia nigra reticulata |
| SNRI | serotonin norepinephrine reuptake inhibitor |
| snRNA | Small nuclear RNA |
| snRNP | Small nuclear RNP |
| snRNP | Small nuclear ribonucleoprotein |
| snRNP | small nuclear ribonucleoprotein particle |
| SNRT | SINUS NODE RECOVERY TIME |