(HP) A measurement of the engine's ability to perform work. One horsepower is defined as the ability to lift 33,000 pounds one foot in one minute. To find horsepower, the total rate of work in foot pounds accomplished is divided by 33,000. If a machine was lifting 100 pounds 660 feet per minute, its total rate of work would be 66,000 foot pounds per minute. Divide this by 33,000 foot pounds per minute to arrive at 2 horsepower. In metric terms, it is the ability to raise 250 kilograms a distance of 30 centimeters in one second. It is also equal to 745.7 watts.

Dictionary of automotive terms. 2015.

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  • horsepower — [hôrs′pou΄ər] n. [first adopted by WATT James] 1. the power exerted by a horse in pulling pl. horsepower 2. a basic unit of power in the FPS system, equal to the power needed to raise a weight of 550 pounds a distance of 1 foot in 1 second or a… …   English World dictionary

  • horsepower — horse‧pow‧er [ˈhɔːsˌpaʊə ǁ ˈhɔːrsˌpaʊr] written abbreviation hp noun [countable, uncountable] a unit for measuring the power of an engine: • The test vehicle s horsepower was increased by 11% …   Financial and business terms

  • horsepower — 1806, from HORSE (Cf. horse) + POWER (Cf. power); established by Watt as the power needed to lift 33,000 pounds one foot in one minute, which is actually about 1.5 times the power of a strong horse …   Etymology dictionary

  • horsepower — ► NOUN (pl. same) ▪ an imperial unit of power equal to 550 foot pounds per second (about 750 watts), especially as a measurement of engine power …   English terms dictionary

  • Horsepower — hp redirects here. For other uses, see HP (disambiguation). Horsepower (HP) is the name of several units of measurement of power. The most common definitions equal between 735.5 and 750 watts.[1] Horsepower was originally defined to compare the… …   Wikipedia

  • horsepower — /hawrs pow euhr/, n. 1. a foot pound second unit of power, equivalent to 550 foot pounds per second, or 745.7 watts. 2. Informal. the capacity to achieve or produce; strength or talent: The university s history faculty is noted for its… …   Universalium

  • Horsepower — Einheit Norm Alte Maße und Gewichte Einheitenname Pferdestärke Einheitenzeichen PS Beschriebene Größe(n) Leistung Größensymbol(e) …   Deutsch Wikipedia

  • horsepower — (hp)    a unit of power representing the power exerted by a horse in pulling. The horsepower was defined by James Watt (1736 1819), the inventor of the steam engine, who determined after careful measurements that a horse is typically capable of a …   Dictionary of units of measurement

  • horsepower — noun /ˈhɔː(r)spaʊə(r)/ a) A non metric unit of power (symbol hp) with various definitions, for different applications. The most common of them is probably the mechanical horsepower, approximately equal to 745.7 watts. political horsepower b) A… …   Wiktionary

  • Horsepower — Horse|pow|er auch: Horse|po|wer 〈[hɔ:spaʊə(r)] f.; , ; ; in angelsächsischen Ländern〉 Einheit der Leistung, 1 h.p. = 1,013 PS = 745,7 W [engl., „Pferdestärke“] * * * Horse|po|w|er [ hɔ:spaʊə ], die; , [engl. horsepower, eigtl. = Pferdekraft]… …   Universal-Lexikon

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