WordReference Random House Learner's Dictionary of American English © 2017
joule /dʒul, dʒaʊl/USA pronunciation   n. [countable]
  1. Physicsa unit of work or energy, equal to the work done by a force of one newton when moved through a distance of one meter in the direction of the force.

WordReference Random House Unabridged Dictionary of American English © 2017
joule  ( jo̅o̅l, joul),USA pronunciation n. [Physics.]
  • Physicsthe SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves through a distance of one meter in the direction of the force: equivalent to 107 ergs and one watt-second. Abbr.: J, j Also called  newton-meter. 
    • named after J. P. Joule 1885–90

    Joule  ( jo̅o̅l, joul),USA pronunciation n. 
  • BiographicalJames Prescott, 1818–89, English physicist.


  • Collins Concise English Dictionary © HarperCollins Publishers::

    joule /dʒuːl/ n
    1. the derived SI unit of work or energy; the work done when the point of application of a force of 1 newton is displaced through a distance of 1 metre in the direction of the force. 1 joule is equivalent to 1 watt-second, 107 ergs, 0.2390 calories, or 0.738 foot-pound
      Symbol: J
    Etymology: 19th Century: named after James Prescott Joule



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