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 bus now holds 100 gallons of water, 1,800 amp-hours of lithium-ion batteries and 3,300 watts of solar power — enough to run air conditioning, appliances and electronics without ever plugging in. —Jordan Greene, PEOPLE, 29 Dec. 2025

Under federal law, a low-speed electric bicycle must have operable pedals, a motor no stronger than 750 watts, and a top speed of 20 mph when powered solely by the motor. —Rick Hurd, Mercury News, 23 Dec. 2025

In fact, external benchmarks like MLPerf and InferenceMAX view Blackwell as the clear leader in both training and inference, with Nvidia standing out in terms of key metrics like tokens per watt and revenue per token. —Tipranks.com Staff, CNBC, 21 Dec. 2025

Lithium batteries with 100 watt hours or less are okay. —Michelle Del Rey, USA Today, 15 Dec. 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