Definition of joule in English:

joule

Line breaks: joule
Pronunciation: /dʒuːl
 
/
(abbreviation: J)

noun

  • The SI unit of work or energy, equal to the work done by a force of one newton when its point of application moves one metre in the direction of action of the force, equivalent to one 3600th of a watt-hour.
    More example sentences
    • And a joule is indeed a sensible sort of unit in everyday life - a 60-watt lightbulb radiates 60 joules of energy every second.
    • The unit of absorbed dose is call the gray, which is the amount of energy in joules from the radiation absorbed per kilogram of the absorbing material.
    • One calorie of heat is equivalent to 4.2 joules of work.

Origin

late 19th century: named after J. P. Joule (see Joule, James Prescott).

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