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Noun
- 1. joule, J, watt second, work unit, heat unit, energy unit
- usage: a unit of electrical energy equal to the work done when a current of one ampere passes through a resistance of one ohm for one second
- 2. J, j, letter, letter of the alphabet, alphabetic character
- usage: the 10th letter of the Roman alphabet
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Definition and meaning of j (Dictionary)