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Ellipsoid vs. Ellipse

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Main Difference

The main difference between Ellipsoid and Ellipse is that the Ellipsoid is a closed quadric surface that is a three dimensional analogue of an ellipse and Ellipse is a type of curve on a plane.

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Wikipedia
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  • Ellipsoid (noun)

    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 = 0.

  • Ellipsoid (noun)

    Such a surface used as a model of the shape of the earth.

    "Here the geoid is thirty meters below the ellipsoid."

  • Ellipsoid (adjective)

    Shaped like an ellipse; elliptical.

  • Ellipsoid (adjective)

    Of or pertaining to an ellipse; elliptic.

  • Ellipsoid (adjective)

    Having the tridimensional shape of an ellipse rotated on its long axis.

  • Ellipse (noun)

    A foci of the ellipse) is constant; equivalently, the conic section that is the intersection of a cone with a plane that does not intersect the base of the cone.

  • Ellipse (verb)

    To remove from a phrase a word which is grammatically needed, but which is clearly understood without having to be stated.

    "In B's response to A's question:- (A: Would you like to go out?, B: I'd love to), the words that are ellipsed are go out."

Wiktionary
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  • Ellipsoid (noun)

    A solid, all plane sections of which are ellipses or circles. See Conoid, n., 2 (a).

  • Ellipsoid (adjective)

    Pertaining to, or shaped like, an ellipsoid; as, ellipsoid or ellipsoidal form.

  • Ellipse (noun)

    An oval or oblong figure, bounded by a regular curve, which corresponds to an oblique projection of a circle, or an oblique section of a cone through its opposite sides. The greatest diameter of the ellipse is the major axis, and the least diameter is the minor axis. See Conic section, under Conic, and cf. Focus.

  • Ellipse (noun)

    Omission. See Ellipsis.

  • Ellipse (noun)

    The elliptical orbit of a planet.

Webster Dictionary
  • Ellipsoid (noun)

    a surface whose plane sections are all ellipses or circles;

    "the Earth is an ellipsoid"

  • Ellipsoid (adjective)

    in the form of an ellipse

  • Ellipse (noun)

    a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it;

    "the sums of the distances from the foci to any point on an ellipse is constant"

Princeton's WordNet

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