Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A geometric surface, all of whose plane sections are either ellipses or circles.

from The Century Dictionary.

  • noun In geometry, a solid figure all plane sections of which are ellipses or circles.
  • noun In anthropology, a cranium the norma verticalis of which has an ellipsoidal form.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Pertaining to, or shaped like, an ellipsoid.
  • noun (Geom.) A solid, all plane sections of which are ellipses or circles. See conoid, n., 2 (a).
  • noun a spheroid; a solid figure generated by the revolution of an ellipse about one of its axes. It is called a prolate spheroid, or prolatum, when the ellipse is revolved about the major axis, and an oblate spheroid, or oblatum, when it is revolved about the minor axis.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun mathematics a surface, all of whose cross sections are elliptic or circular (includes the sphere)
  • noun geography Such a surface used as a model of the shape of the earth.
  • adjective Shaped like an ellipse; elliptical.
  • adjective mathematics Of or pertaining to an ellipse.
  • adjective botany Having the tridimensional shape of an ellipse rotated on its long axis.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a surface whose plane sections are all ellipses or circles
  • adjective having the nature or shape of an ellipsoid

Etymologies

Sorry, no etymologies found.

Examples

  • "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."

    Bunny and a Book

  • 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.

    Economic Principals

  • [T] he variety of shapes found in the neurons of a wheel-shaped brain structure called the ellipsoid body "are just amazing," Peng says.

    PhysOrg.com - latest science and technology news stories

  • [T] he variety of shapes found in the neurons of a wheel-shaped brain structure called the ellipsoid body "are just amazing," Peng says.

    PhysOrg.com - latest science and technology news stories

  • [T] he variety of shapes found in the neurons of a wheel-shaped brain structure called the ellipsoid body "are just amazing," Peng says.

    PhysOrg.com - latest science and technology news stories

  • [T] he variety of shapes found in the neurons of a wheel-shaped brain structure called the ellipsoid body "are just amazing," Peng says.

    PhysOrg.com - latest science and technology news stories

  • 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.

    Wolfram Blog : Twisted Architecture

  • The FabLab House was designed as an ellipsoid structure prefabricated from wood that is formed into a rib-like structure.

    FabLab House: Solar Decathlon Europe Entry | Inhabitat

  • Instead of the horseshoe of CIE plane you get a sort of ellipsoid truncated by a plane on the purple side.

    Charting Pigments

  • 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.

    Charting Pigments

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