toroid

[ tawr-oid, tohr- ]

nounGeometry.
  1. a surface generated by the revolution of any closed plane curve or contour about an axis lying in its plane.

  2. the solid enclosed by such a surface.

Origin of toroid

1
First recorded in 1895–1900; tor(us) + -oid

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

British Dictionary definitions for toroid

toroid

/ (ˈtɔːrɔɪd) /


noun
  1. geometry a surface generated by rotating a closed plane curve about a coplanar line that does not intersect the curve

  2. the solid enclosed by such a surface: See also torus

Derived forms of toroid

  • toroidal, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for toroid

toroid

[ tôroid′ ]


  1. A surface generated by rotating a closed curve about an axis that is in the same plane as the curve but does not intersect it.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.