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Definition of: horsepower
(hôrs′pou′ər) noun
1. The force exerted by, or rate of work maintained by, an average dray horse.
2. Mech. The standard theoretical unit of the rate of work, equal to 33,000 pounds lifted one foot in one minute, or 550 foot–pounds per second.
3. A mechanical arrangement for utilizing a horse's power.
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