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 nickel-coated controller makes this SSD more efficient by increasing MB per watt by 73% while consuming 16% less power than the Evo 990. — George Yang, PC Magazine, 8 Sep. 2026

Its 1,400-watt infrared heater quietly emits nearly 5,000 Btu of heat, but the exterior remains cool to the touch. — Bestreviews, Chicago Tribune, 7 Sep. 2026

Kerkamm aims to give buyers robust off-grid capability with a Victron electrical system based around a 550-Ah lithium battery bank fed by a 400-watt solar array. — New Atlas, 5 Sep. 2026

In a corner of the park designed for 2 to 5-year-olds, colorful faux-houses named after units of electricity (volts, ohms, watts and amps) feature fake solar panels and buttons which activate sound effects and control small lights. — Sacbee.com, 4 Sep. 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