The product of the momentum of a rotating body and its distance from the axis of rotation WordNet 3.0 & Open English WordNet

In physics, angular momentum is the rotational analog of linear momentum. Wikipedia

Measure of the extent to which an object will continue to rotate in the absence of an applied torque Wikidata

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. Wiktionary

Angular momentum. Wiktionary (translation)