Definition:Angular Momentum

Definition
The angular momentum of a body about a point $O$ is the vector cross product of its moment of inertia $\mathbf I$ about $O$ by its angular velocity $\omega$ about $O$:
 * $\mathbf L = \mathbf I \times \omega$

Particle
Angular momentum is a vector quantity.

Also see

 * Definition:Linear Momentum


 * Conservation of Angular Momentum