Definify.com
Webster 1913 Edition
Metacentre
{
, Metˊa-cen′ter
orMetˊa-cen′tre
}Noun.
[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.
☞ When the metacenter is above the center of gravity, the position of the body is stable; when below it, unstable.