watt

[wot]
noun
  1. 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.

Origin of watt

First recorded in 1882; named after J. Watt

Watt

[wot]
noun
  1. James,1736–1819, Scottish engineer and inventor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for watt

Contemporary Examples of watt

Historical Examples of watt

  • His originality as an inventor has indeed been called in question, like that of Watt and Stephenson.

    Self-Help

    Samuel Smiles

  • Next morning Watt began to put his scheme to the test and found it practicable.

    The Age of Invention

    Holland Thompson

  • Those who worked without Watt's engine could hardly succeed.

    The Age of Invention

    Holland Thompson

  • The same is true of the "3-25 watt (lamps), in series" listed in the table.

  • The lamp you use should be an ordinary 25, 40, or 60 watt vacuum lamp.

    Common Science

    Carleton W. Washburne


British Dictionary definitions for watt

watt

noun
  1. 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

Watt

noun
  1. 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

Word Origin and History for watt
n.

unit of electrical power, 1882, in honor of James Watt (1736-1819), Scottish engineer and inventor.

Online Etymology Dictionary, © 2010 Douglas Harper

watt in Medicine

watt

[wŏt]
n.
  1. A unit of power in the International System of Units equal to one joule per second.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

watt in Science

watt

[wŏt]
  1. 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).

Watt

James 1736-1819
  1. 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.

watt in Culture

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.