| SNR | selective nerve root [block]; signal-to-noise ratio; substantia nigra zona reticulata; supernumerary... |
|---|---|
| SNRB | selective nerve root block |
| SSBG | sex steroid-binding globulin; social services block grant |
| TAVB | total atrioventricular block |
| AV | 1) Azygo(u)s Vein(AV)(= Vena Azygo(u)s); 기정맥(奇靜脈) 1) Atrio-Ventricular |