1884, from kilo- + watt. Kilowatt hour is from 1892. Related: Kilowattage.
kilowatt (n.)
also kilo-watt, 1884, from kilo- + watt.
kiloliter
kilolitre
kilometer
kilometre
kiloton
kilowatt
Kilroy
kilt
kilter
Kimberley
Kimberly
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