horsepower-hour

[ hawrs-pou-er-ouuh r, -ou-er ]
/ ˈhɔrsˌpaʊ ərˌaʊər, -ˌaʊ ər /

noun

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.

Origin of horsepower-hour

First recorded in 1895–1900

British Dictionary definitions for horsepower-hour

horsepower-hour

noun

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 6 joules