Noun
(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
(sports) A zorb; the act of zorbing, entering a zorbing ball, strapping into a harness, and rolling down a hill
Source: en.wiktionary.orgThe space of our universe is the hypersurface of a vast expanding hypersphere. Rudy Rucker
I had formed a vague idea that the sex sphere was a hypersphere extending into the fourth dimension. Which meant that if the sphere's giant cunt swallowed me I could end up somewhere very... different. Rudy Rucker
In other words: the 30 vertices of the 600-cell which lie at arc distances of 90 degrees on its circumscribed hypersphere from a pair of opposite vertices, are the vertices of an icosidodecahedron. Source: Internet
That is, as a proportion of the relevant unit hypersphere taken up by the generalized angle, or set expressed in spherical coordinates. Source: Internet