1911 Encyclopædia Britannica/Ellipticity

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Ellipsoid
1911 Encyclopædia Britannica, Volume 9
Ellipticity
Ellis, Alexander John
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See also Ellipticity on Wikipedia; and our 1911 Encyclopædia Britannica disclaimer.

​ELLIPTICITY, in astronomy, deviation from a circular or spherical form; applied to the elliptic orbits of heavenly bodies, or the spheroidal form of such bodies. (See also Compression.)

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