(physics) Of a body in motion: the tendency of a body to maintain its inertial motion; the product of its mass and velocity, or the vector sum of the products of its masses and velocities.

plural of momentum

(physics) The vector product that describes the rotary inertia of a system about an axis and is conserved in a closed system. For an isolated rigid body, it is a measure of the extent to which an object will continue to rotate in the absence of an applied torque.

(physics) A generalization of momentum in four-dimensional spacetime.

(physics) A specific vector associated with the movement of electrons in a crystal lattice

plural of crystal momentum

(physics) The momentum of one Planck mass traveling at the speed of light:P_P=√≈6.525 mbox Ns.

plural of Planck momentum

Without momentum.