joule

noun

ˈjül How to pronounce joule (audio)
also nonstandard
ˈjau̇(-ə)l How to pronounce joule (audio)
: a unit of work or energy equal to the work done by a force of one newton acting through a distance of one meter

Examples of joule in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The lead reindeer would absorb trillions of joules of energy every second, instantly bursting into flames. Kapil Kajal, Interesting Engineering, 25 Dec. 2025 In The Encyclopedia of Volcanoes, the energy to melt just Earth’s mantle—which is in fact a solid and not a liquid—is shown to be about 3 × 1030 joules. Phil Plait, Scientific American, 18 Dec. 2025 The company is planning to open a flash joule heating plant to recover metals from electronic waste in Texas in December. IEEE Spectrum, 9 Oct. 2025 The company states that two and a half minutes of cranking is enough to generate a Quick Charge of 900 joules (250 mWh), which is sufficient to restart your dead phone to make a lifesaving emergency call. New Atlas, 9 June 2025 See All Example Sentences for joule

Word History

Etymology

James P. Joule

First Known Use

1882, in the meaning defined above

Time Traveler
The first known use of joule was in 1882

Browse Nearby Words

Cite this Entry

“Joule.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/joule. Accessed 26 Dec. 2025.

Kids Definition

joule

noun
: a unit of work or energy equal to the work done by a force of one newton acting through a distance of one meter

Medical Definition

joule

noun
: a unit of work or energy equal to the work done by a force of one newton acting through a distance of one meter

Biographical Definition

Joule

biographical name

James Prescott 1818–1889 English physicist

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