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torus noun

  /ˈtoː.ɹəs/ , /ˈtɔɹ.əs/ , /ˈtɔː.ɹəs/
  • (geometry) The standard representation of such a space in 3-dimensional Euclidean space: a surface or solid formed by rotating a closed curve, especially a circle, about a line which lies in the same plane but does not intersect it (e.g. like a ring doughnut).
  • (topology) A topological space which is a product of two circles.
 τόρος
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