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Pacemaker

//ˈpeɪsˌmeɪkəɹ// noun

Definitions

Noun
  1. 1
    Specialized cells which stimulate the heart to beat.

    "natural pacemaker"

  2. 2
    a horse used to set the pace in racing wordnet
  3. 3
    A medical implement that is used to stimulate a heart to beat by simulating the action of the natural pacemaker. broadly

    "artificial pacemaker"

  4. 4
    an implanted electronic device that takes over the function of the natural cardiac pacemaker wordnet
  5. 5
    One who sets the pace in a race, to guide the others. uncommon
Show 2 more definitions
  1. 6
    a specialized bit of heart tissue that controls the heartbeat wordnet
  2. 7
    a leading instance in its field wordnet

Etymology

From pace + maker.

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