sick sinus syndrome
n.
Chaotic atrial activity characterized by an abnormally slow heartbeat punctuated by recurring ectopic beats and periods of an abnormally rapid heartbeat.
Words nearby sick sinus syndrome
sick leave,
sick list,
sick note,
sick pay,
sick role,
sick sinus syndrome,
sick to one's stomach,
sick-dog,
sick-out,
sickbay,
sickbed