Definitions for: Eccentricity

[n] strange and unconventional behavior
[n] a circularity that has a different center or deviates from a circular path
[n] (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"

Webster (1913) Definition: Ec`cen*tric"i*ty, n.; pl. Eccentricities. [Cf.
F. excentricit['e].]
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.

Antonyms: concentricity

See Also: circularity, disk shape, oddity, oddness, ratio, strangeness, unfamiliarity

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