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

The installation of lights will expand the detail of objects by going from 8 inches to 24 inches, utilizing a 60 watt center RGBW LED and 32 additional 1 watt RGBW LEDs around it. —Dallas Morning News, 20 Mar. 2026

Motor output cannot exceed 750 watts. —Sydney Barragan, Oc Register, 20 Mar. 2026

Conventional atomic clocks, even when miniaturised, typically require volumes of several hundred cubic centimetres and consume several watts of power. —Jijo Malayil, Interesting Engineering, 19 Mar. 2026

The Cuisinart hand mixer’s 220-watt motor had no problem powering the beaters through our cookie dough and helping the whisk to create meringue-worthy stiff peaks in our egg whites. —Mark Marino, Bon Appetit Magazine, 18 Mar. 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