/ Dictionary / Index K kilowatt-hour: Meaning and Definition of Find definitions for: kil•o•watt-hour Pronunciation: (kil'u-wot"our', -ou'ur), [key] — n. 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. See also: kilowatt-hour (Thesaurus) kilowatt Kilpatrick Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language