horsepower-hour

American  

[hawrs-pou-er-ou^uhr, -ou-er] / ˈhɔrsˌpaʊ ərˌaʊər, -ˌaʊ ər /

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.

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horsepower-hour British  

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 ⁶ joules

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Etymology

Origin of horsepower-hour

First recorded in 1895–1900

Example Sentences

As a matter of fact, there is less heat to be had in thermal units from a horsepower-hour of electricity than from three ounces of coal.

From Project Gutenberg