from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having the shape of a torus or toroid

from The Century Dictionary and Cyclopedia

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

  • adj. of or relating to or shaped like a toroid; doughnut shaped


Sorry, no etymologies found.



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  • 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

  • Mmmm, doughnuts!

    September 23, 2008