RhymeZone: eccentricity definitions

Definitions of eccentricity:

noun: strange and unconventional behavior
noun: a circularity that has a different center or deviates from a circular path
noun: (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
Example: "A circle is an ellipse with zero eccentricity"