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HP

HP

35 3.4
A unit for measuring engine or motor power equal to 746 watts
  • noun
  • Specialized
translation icon : caballo de vapor (CV)
  • For example, 10 years ago, a 25-hp motor converted 91.7 percent of the electricity it received into horsepower.
  • an HP engine
  • an HP motor
  • HP at 1,800 rpm

Examples

  • Looks like there's a 250 hp NOS unit.

  • The RS and LS models are equipped with a 1.8-liter, 142-hp, DOHC 16-valve engine.

    Academic text (1993)
  • The motors are available from 1/2 to 5 hp in frame sizes from 48 to 184T.

    Academic text (1997)
  • Motors range from 1 to 20 HP and are offered in TEFC or explosion-proof.

    Academic text (1997)
  • There are about 40 large electric motors, ranging from 50 to 250 hp, used at the Blue Circle quarry.

    Academic text (1999)
  • Motor/drive packages are available from fractional hp to more than 500 hp.

    Academic text (1996)
  • Sizes range from 25 to 1000 hp with pressures up to 10,000 psi.

    Academic text (1994)
  • To move all of this weight underwater, the UHD is equipped with a 150-hp or 200-hp motor.

    Academic text (2008)
  • An energy-efficient 25-hp motor now converts up to 93.9 percent of electricity into motive power.

    Academic text (1999)
  • The standard 5.7-liter Hemi V8 delivers 383 hp and 400 lb-ft of torque.

Synonyms

horsepower
vsHP
  • Specialized
68 3.7

A unit that measures engine power, equal to 746 watts

is the shortened symbol often used in technical specifications
H.P.
vsHP
  • Specialized
3.9

A measure of engine power used to show how strong a motor is

is the unpunctuated abbreviated form used on labels

How Powerful

megawatt
  • Specialized
20 3.9
kilowatt
  • Specialized
16 3.2
HP
  • Specialized
35 3.4
watt
  • Specialized
106 2.9

Surface Forms

HP singular
HPs plural

Etymology

HP stands for horsepower, from horse and power, where power means 'strength'. Early engineers compared a machine's work to the work of a horse, so HP became a simple way to say how strong an engine or motor is.