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

That’s comparable to a searing 250-watt incandescent bulb or a 25-watt LED. —New Atlas, 20 Feb. 2026

An e-bike must have an electric motor of less than 750 watts, and is split into three classes. —Molly Morrow, Chicago Tribune, 19 Feb. 2026

Coral Springs currently allows scooters and e-bikes on the sidewalk as long as the bike motor is 750 watts or less and doesn't go above 28 miles per hour. —Joan Murray, CBS News, 18 Feb. 2026

The 65-watt unit has space for two, three-prong plugs, two standard USBs, and three USB-C cords. —Kelsey Borovinsky, Architectural Digest, 9 Feb. 2026

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