Definition of horsepower in English:


(also hp)


  • 1A unit of power equal to 550 foot-pounds per second (745.7 watts)

    • ‘The crew chief, Wayne Ridley explained it has 693 horsepower with 657 foot-pounds of torque, which it holds from 5,200 to 8,000 rpm.’
    • ‘Available horsepower at sea-level and high-altitude fields are nearly equal.’
    • ‘The two motors - a 115 horsepower Johnson outboard and a 9.9 horsepower electric long shaft Mercury outboard - are fairly new.’
    • ‘Reducing the air volume meant smaller air handling units, lower fan horsepower, smaller room requirements and smaller ductwork.’
    • ‘You will see ¼ horsepower, 1/3 horsepower and ½ horsepower pumps available.’
    • ‘Torque multiplied by rpm divided by 5,252 equals horsepower.’
    • ‘Without the slugs they would have to use five regular locomotives to get as much tractive effort, even though they only need three units worth of horsepower.’
    • ‘Oberhofer noted that they are able to put three to four more gallons of fuel into their engine after switching from the shoe to the setback blower, and more volume equals more horsepower.’
    • ‘Respectively, these motors now make 355 horsepower and 455 foot pounds of torque and 300 horsepower and 365 foot pounds of torque.’
    • ‘Another effect was that manufacturers were forced to produce vehicles with special gearbox ratios for the French market only as these could have had an effect on the theoretical horsepower, the unit on which the tax was based.’
    • ‘Through mid-July, formal rules had not yet been determined, but it's believed teams will race under a common body template with all cars nearly equal in design and horsepower.’
    • ‘As with any type of electric pump, sewage pumps are rated in horsepower, ranging from less than one half horsepower to one horsepower or more.’
    • ‘Maximum torque was the same for the three fuels, and horsepower was almost equal throughout the acceleration range, except at very maximum revs where Optimax and Ultimate managed just one extra bhp.’
    • ‘Lastly, the compulsory AMG version, the 32, will rocket you there in just over five seconds with 354 horsepower at its disposal.’
    • ‘The whole system is powered by 14000 horsepower turbines which can pump 200 tons of water a second into the large outlying Edogawa river.’
    • ‘Knowing they couldn't match the GM-backed team dollar for dollar, or perhaps even horsepower for horsepower, they set a course for consistency that paid off in the long run.’
    • ‘He also reported that electric motive power for both the mine and mill was furnished by the Ames Power station at a cost of $80 per year for each unit of horsepower.’
    • ‘His two motors, a used 7.5 horsepower and a 3.5 horsepower, cost just $25 apiece.’
    • ‘For a difficult task of only a few seconds' duration, a person can put out thousands of watts - many times the 746 watts in one official horsepower.’
    • ‘The ground clearance will return to 16 inches and the horsepower to ton ratio will change from 13 to 1 back to 17 to 1.’
    1. 1.1The power of an engine measured in terms of this.
      ‘a strong 140-horsepower engine’
      • ‘For $45,000 you can own a Dodge SRT - 10 dry-wall hauler powered by a 500 horsepower Viper V10 engine.’
      • ‘Powering the ‘new Ford Taurus’ is a 2.3 L four-cylinder engine rated at 160 horsepower.’
      • ‘They are powered by 700 - horsepower, methanol-burning engines and reach speeds of 170 mph.’
      • ‘The craft is powered by two 440 horsepower, six-cylinder engines backed by two water jets, which move the craft forward by drawing water in the bottom of the boat and pushing it back out at high speeds.’
      • ‘MFV ‘Carrig Ban’ was a 36 ft fully decked timber vessel built by Hickeys with a 120 horsepower Perkins engine.’
      • ‘There are no suspensions for these race vehicles, and engines vary from 5 horsepower to more than 30 hp.’
      • ‘The RV is powered by a Caterpillar 350 - horsepower diesel engine and an Allison transmission.’
      • ‘Rolls Royce has developed a 4,000 horsepower turbo prop engine that may be used to power the Douglas DC 7D long range airliner.’
      • ‘The 85 - horsepower gasoline engine provides most of the power.’
      • ‘The car will be powered by a 2.2-liter, turbocharged diesel engine generating 136 horsepower.’
      • ‘The 1350 horsepower engine almost forces me to stand on my brakes.’
      • ‘However, with the 110 horsepower diesel engine it is still fast and refined, and capable of returning over 40 miles per gallon.’
      • ‘With it's 1200 horsepower diesel engine, the T-98 is as mobile as the M-1, and has much better gas mileage.’
      • ‘The six-liter, 325 - horsepower turbo diesel engine can muscle you up loose inclines and keep you in the passing lane.’
      • ‘It was powered by two 220 - horsepower diesel engines driving Jacuzzi high-speed jet pumps.’
      • ‘Its 1,001 horsepower engine powers it from to 60 mph in less than three seconds, reaching 186 mph in under 14 seconds.’
      • ‘Ultralight aviation was pioneered in 1976 by John Moody with a 10 horsepower go-cart-powered engine.’
      • ‘The Workman 3100 has a Kohler 23 - horsepower air-cooled gas engine.’
      • ‘Built in 1992, it is also controversial due to its 75,000 horsepower nuclear engine.’
      • ‘Retailing at $1,898, it comes equipped with a 20 horsepower twin cylinder engine and is a whiz at chopping dense growth.’
      driving force, horsepower, hp, acceleration
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