Rapidity or speed of motion; swiftness.
Physics A vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.
The rate of speed of action or occurrence.
The rate at which money changes hands in an economy.
The vector giving the speed and direction of motion of any object.
velocity ve·loc·i·ty (və-lŏs'ĭ-tē) n. Rapidity or speed of motion; specifically, the distance traveled per unit time.