- Physics.
- the velocity at which a falling body moves through a medium, as air, when the force of resistance of the medium is equal in magnitude and opposite in direction to the force of gravity.
- the maximum velocity of a body falling through a viscous fluid.
- Rocketry, Ballistics.
- the greatest speed that a rocket, missile, etc., attains after burnout or after leaving the barrel of a gun.
- the speed of a missile or projectile on impact with its target.
- the constant maximum velocity reached by a body falling under gravity through a fluid, esp the atmosphere
- the velocity of a missile or projectile when it reaches its target
- the maximum velocity attained by a rocket, missile, or shell flying in a parabolic flight path
- the maximum velocity that an aircraft can attain, as determined by its total drag
