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Plural of torus.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Anatomy) the plural of torus
2. (Architecture) the plural of torus
3. (Botany) the plural of torus
4. (Mathematics) the plural of torus
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
to•rus(ˈtɔr əs, ˈtoʊr-)
n., pl. to•ri (ˈtɔr aɪ, ˈtoʊr aɪ)
1. a large convex molding, semicircular in profile, commonly forming the lowest member of the base of a column, directly above the plinth.
a. a doughnut-shaped surface generated by the revolution of a conic, esp. a circle, about an exterior line lying in its plane.
b. the solid enclosed by such a surface.
3. Bot. the receptacle of a flower.
4. Anat. a rounded ridge; a protuberant part.
[1555–65; < Latin: literally, strand, thong, raised ridge]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.