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horsepower. In DICTIOUS you will not only get to know all the dictionary meanings for the word
horsepower, but we will also tell you about its etymology, its characteristics and you will know how to say
horsepower in singular and plural. Everything you need to know about the word
horsepower you have here. The definition of the word
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English
Etymology
horse + power: the unit was originally defined as the amount of power that a horse could provide.
Both non-metric and metric units of power were derived from effectively identical measurements of the power a draught horse could sustain over several hours, with the difference in watts solely due to different rounding errors to express that power in round numbers in the original non-SI units (ft·lbf/min and kgf⋅m/s respectively).
Pronunciation
Noun
horsepower (countable and uncountable, plural horsepowers or horsepower)
- (uncountable) Power derived from the motion of a horse.
2003, Gavin Weightman, What the Industrial Revolution Did for Us, page 57:The wheel was to have been turned by horsepower, but it was adapted to be driven by a mill-wheel on the river Derwent […]
- A nonmetric 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.
- 2012 March 22nd, David Blockley, Engineering: A Very Short Introduction (309), Oxford University Press, →ISBN, chapter 2: “The age of gravity – time for work”, page 20:
- In the past, before the widespread adoption of SI units, the work that engines were capable of doing was compared with the work that horses could do – hence the term ‘horsepower’. Various people came up with various equivalencies, but the modern agreed definition is that 1 horsepower is 746 joules per second or 746 watts.
- A metric unit (symbol often PS from the German abbreviation), approximately equal to 735.5 watts.
- (uncountable) Strength.
political horsepower
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Translations
Translations to be checked
- Hebrew: (please verify) כוח-סוס (Ko'ah Sus) also כ״ס
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