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waterway
waterweed
waterworks
waterworn
watery
WATS
Watson-Crick model
watt
watt-hour
wattage
wattle
wattle and daub
wattlebird
wattmeter
waul
waulk
waulking song
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watt-hour
watt-hour (plural watt-hours)


noun 
Definition:
 
unit of electrical energy: a unit of electrical energy equal to that of one watt operating for one hour
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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