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Definition of watt

watt

/wɑːt/
watt
Plural:watts
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watt Lexical Profile

watt Game Scores & Validity

• noun

1

The standard unit of power in the International System of Units (SI), equivalent to one joule per second, used to express the rate at which electrical energy is dissipated or mechanical work is done.

Example

"The new LED light bulb consumes only nine watts of power while producing the same brightness as an older sixty-watt incandescent bulb."

• Rhymes for watt

• Nearby Words

waterville
waterwheel
watsonia
watt
wattle-eye
wattlebird
waukegan

Word Origin & Etymology

Named in honor of James Watt (1736–1819), a Scottish engineer whose improvements to the steam engine were instrumental to the Industrial Revolution. The unit was formally adopted by the Second Congress of the British Association for the Advancement of Science in 1889.

Cite this Entry

Wordmom. (2026). Definition of Watt. In Wordmom Dictionary. Retrieved Oct 14, 2026, from https://wordmom.com/dictionary/watt
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