from The Century Dictionary.

  • Having a shape like an anchor-ring, or a surface generated by the revolution of a circle about a line in its plane; pertaining to such a surface, or to a family of such surfaces.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Having the shape of a torus or toroid

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective of or relating to or shaped like a toroid; doughnut shaped


Sorry, no etymologies found.



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  • Mmmm, doughnuts!

    September 23, 2008

  • A key feature of the acoustic design of the Sydney Opera House Concert Hall is the suspension of large acrylic(?) toroidal reflectors above the stage.

    One conductor is known to have referred to these as the "toilet seats".

    September 23, 2008