noun Electricity.

a unit of power, equal to one million watts. Abbreviation: MW

Origin of megawatt

First recorded in 1895–1900; mega- + watt Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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Contemporary Examples of megawatt

British Dictionary definitions for megawatt



one million wattsSymbol: MW
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 megawatt

1900, from mega- + watt.

Online Etymology Dictionary, © 2010 Douglas Harper

Culture definitions for megawatt


A unit of power: one million watts. A typical large electrical generating plant can produce a thousand megawatts of electricity.

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.