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Definitions of pacemaker
  1. noun
    a horse used to set the pace in racing

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  2. noun
    a leading instance in its field

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  3. noun
    an implanted electronic device that takes over the function of the natural cardiac pacemaker
  4. noun
    a specialized bit of heart tissue that controls the heartbeat
Definition that contains pacemaker
  • pacemaker an implanted electronic device that takes over the function of the natural cardiac pacemaker
  • artificial pacemaker an implanted electronic device that takes over the function of the natural cardiac pacemaker
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