deviating from the recognized or customary character, practice, etc.; irregular; erratic; peculiar; odd: eccentric conduct; an eccentric person.
Geometry not having the same center; not concentric: used especially of two circles or spheres at least one of which contains the centers of both.
(of an axis, axle, etc.) not situated in the center.
Machinery having the axis or support away from the center: an eccentric wheel.
Astronomy deviating from a circular form, as an elliptic orbit.