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kilowatt-hour
[ kil-uh-wot-ouuhr, -ou-er ]
noun
- a unit of energy, equivalent to the energy transferred or expended in one hour by one kilowatt of power; approximately 1.34 horsepower-hours. : kWh, K.W.H., kwhr
kilowatt-hour
noun
- a unit of energy equal to the work done by a power of 1000 watts in one hour kWh
kilowatt-hour
- A unit used to measure energy, especially electrical energy in commercial applications. One kilowatt-hour is equal to one kilowatt of power produced or consumed over a period of one hour, or 3.6 × 10 6 joules.
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Word History and Origins
Origin of kilowatt-hour1
First recorded in 1890–95
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Compare Meanings
How does kilowatt-hour compare to similar and commonly confused words? Explore the most common comparisons:
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Example Sentences
Ten 100-watt light bulbs burning for one hour would use one kilowatt-hour—one kwh.
From Project Gutenberg
Electricity is usually purchased by the kilowatt hour, and measured by the watt-hour meter (Fig. 160).
From Project Gutenberg
These electric furnaces produce two or three ounces of nitric acid for each kilowatt-hour of current consumed.
From Project Gutenberg
Buck Kendall was casting furtive glances at the kilowatt-hour meter.
From Project Gutenberg
This plant uses local coal and the cost of coal is figured at two mills per kilowatt-hour.
From Project Gutenberg
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