: 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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While the Amp from 2018 supported a total of four speakers, the Amp Multi manages eight outputs at 125 watts per channel, for up to four fully independent zones; these outputs can be independently set to stereo or mono.
—
Abhimanyu Ghoshal, New Atlas, 30 Jan. 2026
The eruptions released an amount of energy estimated to be between 140 and 260 terawatts (one terawatt is a trillion watts).
—Keith Cooper, Space.com, 29 Jan. 2026
To combat that expense, the AI-THt has a 2300-watt solar set with battery to operate fully off grid.
—Jennifer Castenson, Forbes.com, 26 Jan. 2026
Another great multifunctional choice, this GiveBest portable space heater delivers heat at both 1,500 watts or 750 watts, and works as a cold air fan.
—Julia Harrison, Architectural Digest, 23 Jan. 2026
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Abhimanyu Ghoshal, New Atlas, 30 Jan. 2026
The eruptions released an amount of energy estimated to be between 140 and 260 terawatts (one terawatt is a trillion watts).
—Keith Cooper, Space.com, 29 Jan. 2026
To combat that expense, the AI-THt has a 2300-watt solar set with battery to operate fully off grid.
—Jennifer Castenson, Forbes.com, 26 Jan. 2026
Another great multifunctional choice, this GiveBest portable space heater delivers heat at both 1,500 watts or 750 watts, and works as a cold air fan.
—Julia Harrison, Architectural Digest, 23 Jan. 2026
See All Example Sentences for watt
Cite this Entry
“Watt.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/watt. Accessed 1 Feb. 2026.
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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