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

Top-line equipment options extend to the 1,800-watt, 21-speaker Mark Levinson audio system ($1,160). —James Raia, Mercury News, 19 Oct. 2025

Likewise, performance isn't hindered by the lower power draw from a 500-watt power supply. —PC Magazine, 19 Oct. 2025

Designed for flexibility and scalability, the system supports standard photovoltaic (PV) modules of up to 800 watts-peak (Wp) and offers tilt angles of five and 12 degrees. —Georgina Jedikovska, Interesting Engineering, 15 Oct. 2025

This variable speed hand mixer has nine settings, a 100-watt motor, and comes with a slew of attachments to tackle a variety of tasks. —Mark Marino, Bon Appetit Magazine, 8 Oct. 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