Akademik

ellipsoid
1. noun
a) a surface, all of whose cross sections are elliptic or circular (includes the sphere)

Here the geoid is thirty meters below the ellipsoid.

b) Such a surface used as a model of the shape of the earth.
2. adjective
a) of or pertaining to an ellipse; ellipsoidal
b) Shaped like an ellipse; elliptical.
See Also: globose, globoid, ovoid, oblong

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