heartbeat

  1. Noun.  One pulsation of the heart; especially an irregular one, hence the emotion which causes it.
  2. Noun.  The rhythm at which a heart pulsates, a cardiac indicator.
  3. Noun.  A driving impulse or vital force.
  4. Noun.  A very short space of time; an instant.
  5. Noun.  (computing) A periodic signal generated by hardware or software to indicate normal operation or to synchronize other parts of a system.

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This entry was last updated on RefTopia from its source on 3/20/2012.