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horsepower-hour

[ hawrs-pou-er-ouuhr, -ou-er ]

noun

  1. a foot-pound-second unit of energy or work, equal to the work done by a mechanism with a power output of one horsepower over a period of one hour.


horsepower-hour

noun

  1. an fps unit of work or energy equal to the work done by 1 horsepower in 1 hour. 1 horsepower-hour is equivalent to 2.686 × 10 6joules
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of horsepower-hour1

First recorded in 1895–1900

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horsepowerhorsepox