{ it>or }, n. [ Pref. meta- + center. ] (Hydrostatics) The point of intersection of a vertical line through the center of gravity of the fluid displaced by a floating body which is tipped through a small angle from its position of equilibrium, and the inclined line which was vertical through the center of gravity of the body when in equilibrium. [ 1913 Webster ] ☞ When the metacenter is above the center of gravity, the position of the body is stable; when below it, unstable. [ 1913 Webster ] Variants: Metacenter |