hypersphere

(redirected from N-sphere)
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hy·per·sphere

 (hī′pər-sfîr′)
n.
Any of a set of objects resulting from the generalization of a two-dimensional circle and a three-dimensional sphere to n dimensions. In n-dimensional space, a hypersphere is the set of all points that are a given distance, called the radius, from a given point, called the center.