ellipticity

ellipticity

[ih-lip-tis-i-tee, el-ip-, ee-lip-]
noun
the degree of divergence of an ellipse from a circle.

Origin:
1745–55; elliptic- (see elliptical) + -ity

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ellipticity (ɪlɪpˈtɪsɪtɪ, ˌɛl-)
 
n
the degree of deviation from a circle or sphere of an elliptical or ellipsoidal shape or path, measured as the ratio of the major to the minor axes

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