A surface generated by revolving a plane curve about an axis in its plane.
(mathematics) A surface
formed when a given curve
is revolved around a given axis
. If the resulting surface is a closed one, it also defines a solid of revolution.
A sphere is a surface of revolution of a circle around an axis which runs through the center of the circle.
A torus is a surface of revolution of a circle around an axis which is outside the circle.