Thesaurus: ellipticity

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1. n. Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided by the equatorial; thus, the ellipticity of the earth is /.
2. n. the property possessed by a round shape that is flattened at the poles
3. Deviation of an ellipse or a spheroid from the form of a circle or a sphere; especially, in reference to the figure of the earth, the difference between the equatorial and polar semidiameters, divided by the equatorial; thus, the ellipticity of the earth is Note: Some writers use ellipticity as the ratio of the difference of the two semiaxes to the minor axis, instead of the major. Nichol.
4. Deviation of an ellipse or a spheroid from the form of a circleor a sphere; especially, in reference to the figure of the earth, thedifference between the equatorial and polar semidiameters, divided bythe equatorial; thus, the ellipticity of the earth is
5. n the property possessed by a round shape that is flattened at the poles