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watt

[ wot ]
/ wɒt /
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noun
the standard unit of power in the International System of Units (SI), equivalent to one joule per second and equal to the power in a circuit in which a current of one ampere flows across a potential difference of one volt. Abbreviation: W, w.
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Origin of watt

First recorded in 1882; named after J. Watt

Other definitions for watt (2 of 2)

Watt
[ wot ]
/ wɒt /

noun
James, 1736–1819, Scottish engineer and inventor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use watt in a sentence

British Dictionary definitions for watt (1 of 2)

watt
/ (wɒt) /

noun
the derived SI unit of power, equal to 1 joule per second; the power dissipated by a current of 1 ampere flowing across a potential difference of 1 volt. 1 watt is equivalent to 1.341 × 10 –3 horsepowerSymbol: W

Word Origin for watt

C19: named after James Watt

British Dictionary definitions for watt (2 of 2)

Watt
/ (wɒt) /

noun
James. 1736–1819, Scottish engineer and inventor. His fundamental improvements to the steam engine led to the widespread use of steam power in industry
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for watt (1 of 2)

watt
[ wŏt ]

The SI derived unit used to measure power, equal to one joule per second. In electricity, a watt is equal to current (in amperes) multiplied by voltage (in volts).

Scientific definitions for watt (2 of 2)

Watt
James 1736-1819

British engineer and inventor who patented a much improved version of the steam engine (1769) and devised the unit of horsepower. The watt unit of power is named for him.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for watt

watt

The basic unit of power, named after the eighteenth-century Scottish inventor James Watt.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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