Static moment of some quantity, except in the term ``moment of inertia.''

The nth moment of a distribution f (x ) about a point x₀ is the expected value of (x-x₀)ⁿ, that is, the integral of (x-x₀)ⁿdf (x ), where df (x ) is the probability of some quantity's occurrence; the first moment is the mean of the distribution, while the variance may be found in terms of the first and second moments.