cardiac pacemaker

/ˌkɑrdiˈæk ˌpeɪsˈmeɪkər/
IPA guide

Definitions of cardiac pacemaker
  1. noun
    a specialized bit of heart tissue that controls the heartbeat
    synonyms: SA node, pacemaker, sinoatrial node
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    type of:
    cardiac muscle, heart muscle
    the muscle tissue of the heart; adapted to continued rhythmic contraction
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