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

Regardless of class, all e-bikes must have functioning pedals and motors rated at 750 watts or less. —Ryan Murphy, IndyStar, 22 Nov. 2025

Traditional ASMLs are also power-hungry things, typically needing around 200 watts of EUV power to expose wafers at production speed. —Christopher McFadden, Interesting Engineering, 22 Nov. 2025

As of this writing, the H2S has no upgrade path to a 20-watt or 40-watt option, due to the smaller internal power supply. —PC Magazine, 22 Nov. 2025

Inside the cabinet is a 900-watt hybrid amplifier that sustains peaks of 1,250 watts, and combines Class A/B current delivery with Class D power consumption and thermal efficiency. —Robert Ross, Robb Report, 14 Nov. 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