'pacemaker' definitions:

Definition of 'pacemaker'

From: WordNet
noun
A leading instance in its field; "the new policy will be a pacesetter in community relations" [syn: pacesetter, pacemaker]
noun
A specialized bit of heart tissue that controls the heartbeat [syn: pacemaker, cardiac pacemaker, sinoatrial node, SA node]
noun
An implanted electronic device that takes over the function of the natural cardiac pacemaker [syn: pacemaker, artificial pacemaker]
noun
A horse used to set the pace in racing [syn: pacer, pacemaker, pacesetter]

Definition of 'pacemaker'

From: GCIDE
  • pacemaker \pacemaker\ n. (Physiol. & Anat.)
  • 1. a specialized bit of heart tissue that controls the heartbeat.
  • Syn: cardiac pacemaker, sinoatrial node. [WordNet 1.5]
  • 2. An implanted electronic device that takes over the function of the natural cardiac pacemaker[1]; -- used to assist people whose heartbeat is irregular.
  • Syn: artificial pacemaker. [WordNet 1.5]
  • 3. A horse used to set the pace in racing.
  • Syn: pacer, pacesetter. [WordNet 1.5]

Words containing 'pacemaker'