- The state of being eccentric; deviation from the
customary line of conduct; oddity. - The ratio of the distance between the center and the
focus of an ellipse or hyperbola to its semi-transverse axis. - The ratio of the distance of the center of the orbit
of a heavenly body from the center of the body round which it revolves
to the semi-transverse axis of the orbit. - The distance of the center of figure of a body, as of
an eccentric, from an axis about which it turns; the throw.
Meaning of 'eccentricity' (Princeton's WordNet)
1 . eccentricity
[ n]
Meaning (1): - (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