noun Download 🔗Share 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. Examples : "A spinning ice skater pulls their arms in to decrease their moment of inertia, causing their angular momentum to stay constant, which makes them spin faster. " physics energy mass system theory Chat with AIVocabulary GamePractice Reading