sa_node
1. [ noun ] (anatomy,zoology) a specialized bit of heart tissue that controls the heartbeat
Synonyms: cardiac_pacemaker sinoatrial_node pacemaker
Related terms: cardiac_muscle
Similar spelling:   Sande
  Sandie
  Sandee
  sand
  Santo
  sandy
  Sandt
  Sandi
  Sanda
  Santee
  Sandhu
  sandhi
  Santoyo
  Samnite
  Sant
  Santi
  Santa
  saint