: the absolute meter-kilogram-second unit of power equal to the work done at the rate of one joule per second or to the power produced by a current of one ampere across a potential difference of one volt : ¹/₇₄₆ horsepower
Examples of watt in a Sentence
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The third row also has two 100-watt USB-C ports.
—
James Raia, Mercury News, 12 Oct. 2025
This variable speed hand mixer has nine settings, a 100-watt motor, and comes with a slew of attachments to tackle a variety of tasks.
—Mark Marino, Bon Appetit Magazine, 8 Oct. 2025
Sue Carpenter, who directed the doc, started the 40-watt FM station in 1995, taking advantage of a legal ruling that allowed hundreds of low-power radio operators to proliferate — illegally — throughout the country.
—Jem Aswad, Variety, 7 Oct. 2025
Despite some ongoing discussion about lifting the limit to that same 750 watts, EU countries still keep street-legal ebikes leashed at 250 watts.
—New Atlas, 7 Oct. 2025
See All Example Sentences for watt
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James Raia, Mercury News, 12 Oct. 2025
This variable speed hand mixer has nine settings, a 100-watt motor, and comes with a slew of attachments to tackle a variety of tasks.
—Mark Marino, Bon Appetit Magazine, 8 Oct. 2025
Sue Carpenter, who directed the doc, started the 40-watt FM station in 1995, taking advantage of a legal ruling that allowed hundreds of low-power radio operators to proliferate — illegally — throughout the country.
—Jem Aswad, Variety, 7 Oct. 2025
Despite some ongoing discussion about lifting the limit to that same 750 watts, EU countries still keep street-legal ebikes leashed at 250 watts.
—New Atlas, 7 Oct. 2025
See All Example Sentences for watt
Cite this Entry
“Watt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watt. Accessed 17 Oct. 2025.
Copy CitationKids Definition
watt
noun
: a unit of power equal to the work done at the rate of one joule per second
Etymology
named for James Watt 1736–1819 Scottish engineer
Medical Definition
watt
noun
: the absolute mks unit of power equal to the work done at the rate of one joule per second or to the power produced by a current of one ampere across a potential difference of one volt : ¹/₇₄₆ horsepower
Biographical Definition
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