American English

Definition of pacemaker noun from the Oxford Advanced American Dictionary



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  1. 1an electronic device that is put inside a person's body to help their heart beat regularly After his last heart attack, he was fitted with a pacemaker.
  2. 2 = pacesetter (1)
  3. 3 = pacesetter (2)
See the Oxford Advanced Learner's Dictionary entry: pacemaker

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