(physics) A vector quantity that denotes the rate of change of position with respect to time, combining speed with a directional component. / Rapidity of motion. / The rate of occurrence.

plural of velocity

(music) (To be played) with great rapidity.

(astrophysics) The minimum speed needed to escape the gravitational field of a planet or other body.

The speed at which an object in free-fall and not in a vacuum ceases to accelerate downwards because the force of gravity is equal and opposite to the drag force acting against it.

(mathematics, physics) The angle turned, in a given time, by a body rotating about an axis; the rate of rotation through an angle.

(physics) the propagation velocity of the envelope of a modulated travelling wave, which is considered as the propagation velocity of information or energy contained in it.

Motion of an object toward or away from an observer. / (astronomy) Motion of a star toward or away from the earth.

The velocity of an object at any given instant (especially that of an accelerating object).

(physics) The velocity of propagation of a pure sine wave of infinite extent and infinitesimal amplitude.