Definition of "horsepower-hour" []

• A unit of work equal to the work done by one horsepower in one hour (noun)

WordNet. Princeton University. 2010.

• "Among the concepts I have introduced here are kinetic and potential energy; field, limit, and gradient; and such measures as the Calorie, the kilowatt and the kilowatt-hour, the horsepower and horsepower-hour."
• "One kilowatt hour is equivalent to 1.34 horsepower-hours and to 860 Calories; one horsepower-hour equals about 641.56 Calories."
• "At 20 percent efficiency he expends about 1 horsepower-hour of mechanical energy to get the coal."