1) Intersection 2) Intersection point 3) Metacenter 4) Point of intersection 1) Metacenter 
in fluid mechanics, the theoretical point at which an imaginary vertical line through the centre of buoyancy intersects another imaginary vertical ...
In physics, the metacentre is that point in a floating body in which, when the body is disturbed from the position of equilibrium, the vertical line passing through the centre of gravity of the fluid displaced (regarded as still filling the place occupied by the body) meets the line which, when the body is at rest, passes through the centre of grav...