Eccentricity

n.	1.	The state of being eccentric; deviation from the customary line of conduct; oddity.
	2.	(Math.) The ratio of the distance between the center and the focus of an ellipse or hyperbola to its semi-transverse axis.
	3.	(Astron.) 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.
	4.	(Mech.) The distance of the center of figure of a body, as of an eccentric, from an axis about which it turns; the throw.

Noun	1.	eccentricity - strange and unconventional behavior
	2.	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"
	3.	eccentricity - a circularity that has a different center or deviates from a circular path Antonyms: concentricity - the quality of having the same center (as circles inside one another)

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