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  1. Oxford American Dictionary

    moment of inertia

    • IPA[ˌmōmənt əv əˈnərSHə]
    • n.
      a quantity expressing a body's tendency to resist angular acceleration. It is the sum of the products of the mass of each particle in the body with the square of its distance from the axis of rotation.

    • noun: moment of inertia, plural noun: moments of inertia