watt

noun

ˈwät 

: 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

But beyond that, electric bikes that have batteries with more than 750 watts are considered motor vehicles as defined by state law. —Jesse Wright, Chicago Tribune, 26 Aug. 2025

Qualcomm, for instance, leans heavily into performance per watt with its Snapdragon Ride and RB platforms. —Dave Altavilla, Forbes.com, 26 Aug. 2025

For example, polonium-210 has a half-life of a few months, but a power density of 141 watts per gram, which could give it enough power to carry its payload. —IEEE Spectrum, 25 Aug. 2025

Shark Rocket Ultra-Light Corded Bagless Vacuum This Shark vacuum packs 500 watts of suction, so tackling dust, hair, and debris on carpets, hardwood, and tile is easy. —Averi Baudler, People.com, 25 Aug. 2025

Word History

Etymology

James Watt †1819

First Known Use

1882, in the meaning defined above

Phrases Containing watt

• watt-hour

Rhymes for watt

• aught
• baht
• blot
• bott
• bought
• brought
• caught
• clot
• cot
• cott
• dot
• fought

Kids Definition

watt

noun

ˈwät 

: 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

ˈwät 

: 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

Watt

biographical name

ˈwät 

James 1736–1819 Scottish inventor