pacemaker

English dictionary entry

Meanings

noun
  1. Specialized cells which stimulate the heart to beat.
  2. A medical implement that is used to stimulate a heart to beat by simulating the action of the natural pacemaker.
  3. One who sets the pace in a race, to guide the others.

Pronunciation

/ˈpeɪsˌmeɪkəɹ/ En-us-pacemaker.ogg

Word forms

pacemaker pacemakers peacemaker

Etymology

From pace + maker.

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