hypersphere

noun2

1. •
   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.

   • To prove that the hypersphere is a manifold we wish to divide it into polyhedral solids. — 2014
2. •
   A zorb; the act of zorbing, entering a zorbing ball, strapping into a harness, and rolling down a hill.