/ Thesaurus / K Synonyms of kilowatt hour Find synonyms for: Noun1. kilowatt hour, kW-hr, Board of Trade unit, B.T.U., work unit, heat unit, energy unitusage: a unit of energy equal to the work done by a power of 1000 watts operating for one hourWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acme Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language