Hyperboloid meaning

hī-pûrbə-loid
Either of two quadric surfaces generated by rotating a hyperbola about either of its main axes and having a finite center with certain plane sections that are hyperbolas and others that are ellipses or circles.
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A solid often formed by rotating a hyperbola around either main axis: its plane sections are hyperbolas, ellipses, or circles.
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The surface of such a solid.
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Either of two surfaces generated by rotating a hyperbola about either of its main axes and having a finite center, with certain plane sections that are hyperbolas and others that are ellipses or circles.
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A particular surface in three-dimensional Euclidean space, the graph of a quadratic with all three variables squared and their coefficients not all of the same sign.
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