: 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
Recent Examples on the Web
The Federal Aviation Administration limits electric wheelchair and scooter battery size to 300 watt hours.
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Michael Salerno, AZCentral.com, 20 Sep. 2025
The 320-watt mid-drive motor is unique to Specialized models, as is its control system, its handlebar display, its charge ports, and its software.
—Kevin Purdy, ArsTechnica, 20 Sep. 2025
The laptop's thermal design has large fans and heat pipes to keep things cool over extended gaming sessions, so the system can run at up to 260 watts of total power.
—Mark Coppock, PC Magazine, 20 Sep. 2025
Our metabolic rate as an animal is one hundred watts.
—Paul Kingsnorth, Harpers Magazine, 19 Sep. 2025
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Michael Salerno, AZCentral.com, 20 Sep. 2025
The 320-watt mid-drive motor is unique to Specialized models, as is its control system, its handlebar display, its charge ports, and its software.
—Kevin Purdy, ArsTechnica, 20 Sep. 2025
The laptop's thermal design has large fans and heat pipes to keep things cool over extended gaming sessions, so the system can run at up to 260 watts of total power.
—Mark Coppock, PC Magazine, 20 Sep. 2025
Our metabolic rate as an animal is one hundred watts.
—Paul Kingsnorth, Harpers Magazine, 19 Sep. 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 26 Sep. 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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