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kilowatt-hour

[ kil-uh-wot-ouuhr, -ou-er ]
/ ˈkɪl əˌwɒtˈaʊər, -ˈaʊ ər /
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noun

a unit of energy, equivalent to the energy transferred or expended in one hour by one kilowatt of power; approximately 1.34 horsepower-hours. Abbreviation: kWh, K.W.H., kwhr

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Origin of kilowatt-hour

First recorded in 1890–95

Words nearby kilowatt-hour

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for kilowatt-hour

kilowatt-hour

noun

a unit of energy equal to the work done by a power of 1000 watts in one hourSymbol: kWh
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 kilowatt-hour

kilowatt-hour

A unit used to measure energy, especially electrical energy in commercial applications. One kilowatt-hour is equal to one kilowatt of power produced or consumed over a period of one hour, or 3.6 X 106 joules.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for kilowatt-hour

kilowatt-hour
[ (kil-uh-waht) ]

A unit of energy: the expenditure of one kilowatt of power for one hour. A toaster running for an hour will use about this much energy.

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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