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Meaning of kilowatt-hour

kil•o•watt-hour

Pronunciation: (kil'u-wot"our', -ou'ur), [key]
— n.
  1. a unit of energy, equivalent to the energy transferred or expended in one hour by one kilowatt of power; approximately 1.34 horsepower-hours. Abbr.: kWh, kwhr
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.