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

1895–1900; mega- + watt Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
megawatt (ˈmɛɡəˌwɒt)
MW one million watts

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Cultural Dictionary

megawatt definition

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

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
Each credit represents a subsidy to help produce one megawatt hour of renewable electricity, such as wind power.
Formidably toned by yoga, her body is in superb shape, but despite her tanned skin and megawatt smile she looks fragile and wan.
Megawatt is wrongly used several times as a unit for energy.
The engine would have to deliver about a megawatt of power for every pound of weight of the ship.
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