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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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n. - A horse used to set the tempo in racing; An implanted electronic device that takes over the function of the natural heart regulator; A specialized bit of heart tissue that controls the heartbeat; A leading instance in its field.

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Usage examples (34)
  • I think the vice president used the term pacemaker plus.
  • We all know that heart monitor or pacemaker is just an illusion and has no basis on quantum mechanics.
  • -- A pacemaker is a small implanted device that helps …
  • Leahy says this so-called pacemaker plus lets him live on borrowed time.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.