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hypersphere

[hahy-per-sfeer, hahy-per-sfeer]
noun Mathematics.
  1. the generalization of a sphere to more than three dimensions.
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Origin of hypersphere

First recorded in 1965–70; hyper- + sphere
Related formshy·per·spher·i·cal [hahy-per-sfer-i-kuh l] /ˌhaɪ pərˈsfɛr ɪ kəl/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018