English definition of Velocity

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Definition of velocity

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Velocity (n.) Rate of motion; the relation of motion to time, measured by the number of units of space passed over by a moving body or point in a unit of time, usually the number of feet passed over in a second. See the Note under Speed..

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Fleet :: Fleet (v. i.) Swift in motion; moving with velocity; light and quick in going from place to place; nimble.

Cyclone :: Cyclone (n.) A violent storm, often of vast extent, characterized by high winds rotating about a calm center of low atmospheric pressure. This center moves onward, often with a velocity of twenty or thirty miles an hour..

Dyne :: Dyne (n.) The unit of force, in the C. G. S. (Centimeter Gram Second) system of physical units; that is, the force which, acting on a gram for a second, generates a velocity of a centimeter per second..

Vector :: Vector (n.) A directed quantity, as a straight line, a force, or a velocity. Vectors are said to be equal when their directions are the same their magnitudes equal. Cf. Scalar..

Tachometer :: Tachometer (n.) An instrument for measuring the velocity of running water in a river or canal, consisting of a wheel with inclined vanes, which is turned by the current. The rotations of the wheel are recorded by clockwork..

Myograph :: Myograph (n.) An instrument for determining and recording the different phases, as the intensity, velocity, etc., of a muscular contraction..

Momentum :: Momentum (n.) The quantity of motion in a moving body, being always proportioned to the quantity of matter multiplied into the velocity; impetus..

Swiftness :: Swiftly (adv.) In a swift manner; with quick motion or velocity; fleetly.

Nephoscope :: Nephoscope (n.) An instrument for observing the clouds and their velocity.

Whirl :: Whirl (v. t.) A turning with rapidity or velocity; rapid rotation or circumvolution; quick gyration; rapid or confusing motion; as, the whirl of a top; the whirl of a wheel..

Hemadromometry :: Hemadromometry (n.) The act of measuring the velocity with which the blood circulates in the arteries; haemotachometry.

Speed :: Speed (n.) The act or state of moving swiftly; swiftness; velocity; rapidly; rate of motion; dispatch; as, the speed a horse or a vessel..

Whirl :: Whirl (v. i.) To be turned round rapidly; to move round with velocity; to revolve or rotate with great speed; to gyrate.

Whirligig :: Whirligig (n.) A mediaeval instrument for punishing petty offenders, being a kind of wooden cage turning on a pivot, in which the offender was whirled round with great velocity..

Whirl :: Whirl (v. t.) To turn round rapidly; to cause to rotate with velocity; to make to revolve.

Fleetness :: Fleetness (n.) Swiftness; rapidity; velocity; celerity; speed; as, the fleetness of a horse or of time..

Deaden :: Deaden (a.) To lessen the velocity or momentum of; to retard; as, to deaden a ship's headway..

Cycloscope :: Cycloscope (n.) A machine for measuring at any moment velocity of rotation, as of a wheel of a steam engine..

Pitot''s Tube :: Pitot's tube () A bent tube used to determine the velocity of running water, by placing the curved end under water, and observing the height to which the fluid rises in the tube; a kind of current meter..

Velocity :: Velocity (n.) Rate of motion; the relation of motion to time, measured by the number of units of space passed over by a moving body or point in a unit of time, usually the number of feet passed over in a second. See the Note under Speed..