ellipsoid

IPA: ɪɫˈɪpsɔɪd

(mathematics, geometry) A surface, all of whose cross sections are elliptic or circular (including the sphere), that generalises the ellipse and in Cartesian coordinates (x, y, z) is a quadric with equation x²/a² + y²/b² + z²/c² = 1.
(geography) Such a surface used as a model of the shape of the earth.

Shaped like an ellipse; elliptical.
(mathematics) Of or pertaining to an ellipse; elliptic.
(botany) Having the tridimensional shape of an ellipse rotated on its long axis.

Examples of "ellipsoid" in Sentences

Instead of the horseshoe of CIE plane you get a sort of ellipsoid truncated by a plane on the purple side.
The FabLab House was designed as an ellipsoid structure prefabricated from wood that is formed into a rib-like structure.
[T] he variety of shapes found in the neurons of a wheel-shaped brain structure called the ellipsoid body "are just amazing," Peng says.
Always on the lookout for easy results, I experimented first with skinny ellipsoids, and discovered that the top of the Gherkin is too pointed for an ellipsoid to model.
Then you still get a measure of saturation along the line that is centered at white and describes the ellipsoid, the difference being that you need two angles and not just one to describe all the hues.
"The biological implementation of this mechanism is currently unknown, but there is evidence from a previous study that a brain area called the ellipsoid body (sometimes called the" fly motor cortex ") might be involved."
But some mathematicians and scientists fear that the new solution could turn out to be like a Russian discovery of a few years back, called the ellipsoid method, which was beautiful but not very useful in solving the workaday problems at which simplex excels.