WordWeight : Weighing the Words

Pronunciation : Met`a*cen"ter or; Metacentre
Part of Speech : n.
Etymology : [Pref. meta- + center.] (Hydrostatics)
Definition : Defn: 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.

Note: When the metacenter is above the center of gravity, the position of the body is stable; when below it, unstable.
Source : Webster's Unabridged Dictionary, 1913