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

Even before the day began, the car was already generating 300 watts of solar energy. —Nicole Hoey, Robb Report, 1 Apr. 2025

Razer had to shave off an extra 15 watts of total graphics power (TGP) to get it this tiny, meaning this laptop isn't the best showcase for the 5090's maximum performance. —Luke Larsen, Wired News, 27 Mar. 2025

Using the Launch and Landing Facility at NASA's Kennedy Space Center (KSC) in Florida, Star Catcher plans to beam hundreds of watts of electricity nearly a mile (over half a kilometer) across the runway once used to land the agency's space shuttles. —Josh Dinner, Space.com, 24 Mar. 2025

Power is measured in watts, with higher wattages almost always meaning stronger levels of suction. —Bestreviews, Chicago Tribune, 19 Mar. 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