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n. pl. to·ri (tôr′ī)
1. Architecture A large convex molding, semicircular in cross section, located at the base of a classical column.
2. Anatomy A bulging or rounded projection or swelling.
3. Botany
a. The receptacle of a flower.
b. A thickened area in the middle of the membrane that connects the pits of tracheids in conifers and certain other gymnosperms.
4. Mathematics A toroid generated by a circle; a surface having the shape of a doughnut. Also called tore2.

[Latin, bulge, knot, 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.


n, pl -ri (-raɪ)
1. (Architecture) Also called: tore a large convex moulding approximately semicircular in cross section, esp one used on the base of a classical column
2. (Mathematics) geometry a ring-shaped surface generated by rotating a circle about a coplanar line that does not intersect the circle. Area: 4π2Rr; volume: 2π2Rr2, where r is the radius of the circle and R is the distance from the line to the centre of the circle
3. (Botany) botany another name for receptacle2
4. (Anatomy) anatomy a ridge, fold, or similar linear elevation
5. (Celestial Objects) astronomy a dense ring of gas and dust which surrounds a dying star, containing most of the star's ejected gas
[C16: from Latin: a swelling, of obscure origin]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(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.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.torus - a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circletorus - a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
magnetic core, core - (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories; "each core has three wires passing through it, providing the means to select and detect the contents of each bit"
round shape - a shape that is curved and without sharp angles
2.torus - commonly the lowest molding at the base of a columntorus - commonly the lowest molding at the base of a column
moulding, molding - a decorative strip used for ornamentation or finishing
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


n (pl -ri o -ruses) torus m; — palatinus torus palatino
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
King Torus and Richard Hughes in a class of their own as they strike in the Vintage Stakes at Glorious Goodwood last Wednesday
Punters got stuck into the Richard Hannontrained son of Oratorio for his debut in a six-furlong maiden at the end of last month - Torus was sent off the 6-4 favourite.
On a torus, however, where there are more ways for a country to wrap around and touch another country, mathematicians showed as long ago as 1890 that as many as seven colors can be required.
These sections were connected by a transitional form derived from a torus (think of a doughnut), a form we hadn't dealt with before.
He was referred to an oral surgeon for removal of the torus mandibularis.
Researchers also followed the music's key changes with a computerized model of the torus. Their result: While many parts of the brain responded to the music, the rostromedial prefrontal cortex was the only part to accurately keep up with the musical donut.
According to the popular "unification model," an active galactic nucleus like this should be surrounded by a massive, opaque torus, typically several to many light-years wide, feeding the hot disk and absorbing part of its energetic radiation.
The previous record current in a spherical torus was 310,000 amperes achieved in a smaller device called START (Small Tight Aspect Ratio Tokamak) at the Culham Laboratory in England.
Although many of these projects were conducted on large mainframe computers housed at a considerable distance from elementary and secondary school classrooms, TORUS was designed as a prototype of what could eventually appear in a typical classroom, using one microcomputer.
Key Words: Torus Palatinus (TP) Torus Mandibularis (TM) Jordan.
At the same time, Torus named Dermot O'Donohoe as its new CEO, replacing Clive Tobin who is retiring.