Definitions of 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; " a circle is an ellipse with zero eccentricity"

a circularity that has a different center or deviates from a circular path

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.

A Peculiarity of manner or character; oddity.

The distance of the centre of a planet's orbit from the centre of the sun: singularity of conduct: oddness.

The state, quality, or degree of being eccentric; oddity; singularity; an eccentric, odd, or capricious act.

Deviation from a centre; the state of having a centre different from that of another circle; the distance of the centre of a planet's orbit from the centre of the sun departure or deviation from that which is stated, regular, or usual; singularity of conduct.

The being odd or singular; deviation from a centre; the distance of the centre of a planet's orbit from the centre of the sun.