Definition of velocity :
1. Quickness of motion; swiftness; speed; celerity; rapidity; as, the velocity of wind; the velocity of a planet or comet in its orbit or course; the velocity of a cannon ball; the velocity of light.
2. 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.
speed (part of speech: noun)
- Both Griffith and the Pilot witnessed, with deep concern, this unexpected defeat of their hopes; for they could not conceal from themselves that each moment lessened their velocity through the water, as the shot of the enemy stripped the canvas from the yards, or dashed aside the lighter spars in their terrible progress. - "McGuffey's Fifth Eclectic Reader", William Holmes McGuffey.
- This spiral action once begun increases, of itself, in power and velocity. - "Plotting in Pirate Seas", Francis Rolt-Wheeler.
- Had the ram then struck her in the same place, carrying the four knots additional velocity of the current, it is entirely possible that the mortification of the Confederate defeat would have derived some consolation from the sinking of one of Farragut's best ships. - "Admiral Farragut", A. T. Mahan.