toroids

/T AO1 R OY0 D Z/
noun
  1. 1

    A surface generated by a closed curve (especially a circle) rotating about, but not intersecting or containing, an axis in its own plane.

  2. 2

    A ring-shaped object whose surface is a torus.

Source: https://en.wiktionary.org/wiki/toroid, https://en.wiktionary.org/wiki/toroids