toroid

[ tawr-oid, tohr- ]
/ ˈtɔr ɔɪd, ˈtoʊr- /

noun Geometry.

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

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Origin of toroid

First recorded in 1895–1900; tor(us) + -oid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for toroid

toroid
/ (ˈtɔːrɔɪd) /

noun

geometry a surface generated by rotating a closed plane curve about a coplanar line that does not intersect the curve
the solid enclosed by such a surfaceSee 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′ ]

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.