horsepower

== English == === Etymology === From 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 === (General American) enPR: hôrsʹpou'ər, IPA(key): /ˈhɔɹsˌpaʊɚ/ (Received Pronunciation) enPR: hôsʹpou'ə, IPA(key): /ˈhɔːsˌpaʊə/ Hyphenation: horse‧power === Noun === horsepower (countable and uncountable, plural horsepowers or horsepower) (literally, uncountable) Power derived from the motion of a horse. A nonmetric unit of power with various definitions, commonly the mechanical horsepower, approximately equal to 745.7 watts. Synonym: (abbreviation) hp 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. Metric horsepower, a metric unit approximately equal to 735.5 watts. Synonym: (abbreviation, from German) PS (figurative, uncountable) Strength, performance capability, specs, or similar. ==== Derived terms ==== ==== Translations ==== === Anagrams === shorepower