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plural hyperspheres
(geometry) The set of all points in a given hyperspace that are at a given distance from a given point; a generalization of a sphere in four or more dimensions. quotations examples
To prove that the hypersphere is a manifold we wish to divide it into polyhedral solids.
2014, Donald W. Blackett, Elementary Topology: A Combinatorial and Algebraic Approach, Academic Press, page 198
(sports) A zorb; the act of zorbing, entering a zorbing ball, strapping into a harness, and rolling down a hill. examples