Definition of


  1. (noun, animal) a horse used to set the pace in racing
  2. (noun, artifact) an implanted electronic device that takes over the function of the natural cardiac pacemaker
  3. (noun, body) a specialized bit of heart tissue that controls the heartbeat
  4. (noun, cognition) a leading instance in its field

via WordNet, Princeton University

Origin of the word Pacemaker

  1. also pace-maker, 1884, originally a rider or boat that sets the pace for others in training; sense of "man-made device for stimulating and regulating heartbeat" is from 1951. more

via Online Etymology Dictionary, ©2001 Douglas Harper

Words that sound like Pacemaker

passenger, peacemaker, picknicker, picnic area, picnicker, pipe smoker, pisanosaur

via soundex() Hash Matches

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