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.
- 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.