An oddity or peculiarity, as of conduct, or the quality of being eccentric.
The distance between the centers of two cylindrical objects one of which surrounds the other.
Geometry: measure of the deviation of a conic section from circular shape.
strange and unconventional behavior
a circularity that has a different center or deviates from a circular path
(geometry) a ratio describing the shape of a conic section; the ratio of the distance between the foci to the length of the major axis; "a circle is an ellipse with zero eccentricity"
(geometry) a ratio describing the shape of a conic section; the ratio of the distance between the foci to the length of the major axis
