Spheroid meaning

sfîroid, sfĕr-
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A body that is shaped like a sphere but is not perfectly round, especially an ellipsoid that is generated by revolving an ellipse around one of its axes.
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A body that is almost but not quite a sphere, esp. one generated by the rotation of an ellipse about one of its axes.
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Of this shape.
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A three-dimensional geometric surface generated by rotating an ellipse on or about one of its axes.
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A solid of revolution generated by rotating an ellipse about its major (prolate), or minor (oblate) axis.

UFOs are reported as being either oblate (saucer-shaped) or prolate (cigar-shaped) spheroids.

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Of a shape similar to a squashed sphere.
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