HORSE POWER • DICCIONARIO INGLES.COM • Definition of Horse power

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/hɔrs pˈaʊər/ Listen

noun

Horse power n.

1.

The power which a horse exerts.

2.

(Mach.) A unit of power, used in stating the power required to drive machinery, and in estimating the capabilities of animals or steam engines and other prime movers for doing work. It is the power required for the performance of work at the rate of 33,000 English units of work per minute; hence, it is the power that must be exerted in lifting 33,000 pounds at the rate of one foot per minute, or 550 pounds at the rate of one foot per second, or 55 pounds at the rate of ten feet per second, etc. Note: The power of a draught horse, of average strength, working eight hours per day, is about four fifths of a standard horse power.

Brake horse power, the net effective power of a prime mover, as a steam engine, water wheel, etc., in horse powers, as shown by a friction brake. See Friction brake, under Friction.

Indicated horse power, the power exerted in the cylinder of an engine, stated in horse powers, estimated from the diameter and speed of the piston, and the mean effective pressure upon it as shown by an indicator. See Indicator.

Nominal horse power (Steam Engine), a term still sometimes used in England to express certain proportions of cylinder, but having no value as a standard of measurement.

3.

A machine worked by a horse, for driving other machinery; a horse motor.

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Etymology of 'Horse power'

Collaborative International Dictionary of English 0.48

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"Horse power" Quotes from Famous Books

... evidence of the highest authorities on this point, it appears to have been conclusively established, that the cost of upholding steamship machinery has of late years amounted, on the average, to about L6 per horse power per annum, being about 12 per cent. per annum, on the prime cost of the machinery, which annual outlay is but one of the grand points of current expense in which steamship proprietors are concerned." Now, ...

— Ocean Steam Navigation and the Ocean Post • Thomas Rainey

... ligneous portions of the plants and setting the latter free for other uses. The power thus silently exerted is enormous; for every ton of carbon separated in twelve hours necessitates an expenditure of energy represented by at least 1,058 horse power, but the action is spread over an enormous area of leaf surface, rendered necessary by the small proportion of carbonic acid contained in the air, by measure only 1/2000 part, and hence the action is silent and imperceptible. ...

— Scientific American Supplement, No. 441, June 14, 1884. • Various

... sheddeh o nusbeyteen, Ibbi sheddeh o heftedeen, etc., with a keen sympathy with their difficulties and well-smudged tin slates. An additional evil is that the Arabic books printed in England, and at English presses here, require a 40-horse power microscope to distinguish a letter. The ciphering is like ours, but with other figures, and I felt very stupid when I discovered how I had reckoned Arab fashion from right to left all my life and never observed the fact. However, ...

— Letters from Egypt • Lucie Duff Gordon

... machine, and Carville followed me down stairs. He got in and waved his hand. With a spring the car leaped from the kerb—no other word will describe the starting of that car. I suppose it must have been at least a hundred horse power. In a flash it was round the corner and gone. I climbed into my cab and made my humble way to Liverpool Street, eventually reaching Wigborough, and taking up the daily round and the ...

— Aliens • William McFee

... and one-third feet deep to the structural deck. The strength and safety of the hull are increased by five water-tight compartments. Propulsion is effected by a pair of modern stern paddle-wheel engines capable of being worked up to over two hundred and fifty horse power, giving her a speed of ten miles an hour. She has stateroom accommodation for twenty-two passengers, draws three and a half feet of water aft, and eats up half a cord of wood an hour. She will carry to the northern posts their trading-goods ...

— The New North • Agnes Deans Cameron

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