torus

[ tawr-uhs, tohr- ]

/ ˈtɔr əs, ˈtoʊr- /

noun, plural to·ri [tawr-ahy, tohr-ahy]. /ˈtɔr aɪ, ˈtoʊr aɪ/.

Architecture. a large convex molding, more or less semicircular in profile, commonly forming the lowest molding of the base of a column, directly above the plinth, sometimes occurring as one of a pair separated by a scotia and fillets.

Geometry.

Sometimes anchor ring . a doughnut-shaped surface generated by the revolution of a conic, especially a circle, about an exterior line lying in its plane.
the solid enclosed by such a surface.

Botany.

the receptacle of a flower.
a thickening of the wall membrane in the bordered pits occurring in the tracheid cells of the wood of many conifers.

Anatomy. a rounded ridge; a protuberant part.

Origin of torus

First recorded in 1555–65; from Latin: literally, “strand, thong, raised ridge”

Words nearby torus

torula, torulopsosis, torulosis, torulus, Toruń, torus, torus fracture, Torvill and Dean, Tory, Toryish, Toryism

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for torus

Fragment of the base of an unfinished column, with torus moulding and horizontal flutings only partially carried out.
A Catalogue of Sculpture in the Department of Greek and Roman Antiquities, British Museum, Volume I (of 2)|A. H. Smith
A beautiful and early example of its use occurs on the torus of the Ionic columns of the Erectheum at Athens.
The Archaeology and Prehistoric Annals of Scotland|Daniel Wilson
In section this moulding may be compared to a large scotia divided into two cavettos by a torus.
A History of Art in Chalda & Assyria, v. 1|Georges Perrot
In the first place there is the circular moulding or torus with a carved ribbon twisting about it.
A History of Art in Ancient Egypt, Vol. II (of 2)|Georges Perrot

At this time each pistil loosens from the torus and can be easily removed, especially if some animal touch the hooks.
Seed Dispersal|William J. Beal

British Dictionary definitions for torus

torus

/ (ˈtɔːrəs) /

noun plural -ri (-raɪ)

Also called: tore a large convex moulding approximately semicircular in cross section, esp one used on the base of a classical column

geometry a ring-shaped surface generated by rotating a circle about a coplanar line that does not intersect the circle. Area: 4π² Rr; volume: 2π² Rr ², where r is the radius of the circle and R is the distance from the line to the centre of the circle

botany another name for receptacle (def. 2)

anatomy a ridge, fold, or similar linear elevation

astronomy a dense ring of gas and dust which surrounds a dying star, containing most of the star's ejected gas

Word Origin for torus

C16: from Latin: a swelling, of obscure origin

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

Medical definitions for torus

torus

[ tôr′əs ]

n. pl. to•ri (tôr′ī)

A bulging or rounded projection or swelling, such as is caused by a bone or muscle.

Scientific definitions for torus

torus

[ tôr′əs ]

Plural tori (tôr′ī)

A surface generated by rotating a circle about an axis that is in the same plane as the circle but does not intersect it. A torus resembles a donut and is a subtype of toroid.

The torus-shaped apparatus that contains plasma in nuclear fusion reactors.

单词	torus
释义	torus [ tawr-uhs, tohr- ] / ˈtɔr əs, ˈtoʊr- / noun, plural to·ri [tawr-ahy, tohr-ahy]. /ˈtɔr aɪ, ˈtoʊr aɪ/. Architecture. a large convex molding, more or less semicircular in profile, commonly forming the lowest molding of the base of a column, directly above the plinth, sometimes occurring as one of a pair separated by a scotia and fillets. Geometry. Sometimes anchor ring . a doughnut-shaped surface generated by the revolution of a conic, especially a circle, about an exterior line lying in its plane. the solid enclosed by such a surface. Botany. the receptacle of a flower. a thickening of the wall membrane in the bordered pits occurring in the tracheid cells of the wood of many conifers. Anatomy. a rounded ridge; a protuberant part. Origin of torus First recorded in 1555–65; from Latin: literally, “strand, thong, raised ridge” Words nearby torus torula, torulopsosis, torulosis, torulus, Toruń, torus, torus fracture, Torvill and Dean, Tory, Toryish, Toryism Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for torus Fragment of the base of an unfinished column, with torus moulding and horizontal flutings only partially carried out. A Catalogue of Sculpture in the Department of Greek and Roman Antiquities, British Museum, Volume I (of 2)\|A. H. Smith A beautiful and early example of its use occurs on the torus of the Ionic columns of the Erectheum at Athens. The Archaeology and Prehistoric Annals of Scotland\|Daniel Wilson In section this moulding may be compared to a large scotia divided into two cavettos by a torus. A History of Art in Chalda & Assyria, v. 1\|Georges Perrot In the first place there is the circular moulding or torus with a carved ribbon twisting about it. A History of Art in Ancient Egypt, Vol. II (of 2)\|Georges Perrot At this time each pistil loosens from the torus and can be easily removed, especially if some animal touch the hooks. Seed Dispersal\|William J. Beal British Dictionary definitions for torus torus / (ˈtɔːrəs) / noun plural -ri (-raɪ) Also called: tore a large convex moulding approximately semicircular in cross section, esp one used on the base of a classical column geometry a ring-shaped surface generated by rotating a circle about a coplanar line that does not intersect the circle. Area: 4π² Rr; volume: 2π² Rr ², where r is the radius of the circle and R is the distance from the line to the centre of the circle botany another name for receptacle (def. 2) anatomy a ridge, fold, or similar linear elevation astronomy a dense ring of gas and dust which surrounds a dying star, containing most of the star's ejected gas Word Origin for torus C16: from Latin: a swelling, of obscure origin 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 Medical definitions for torus torus [ tôr′əs ] n. pl. to•ri (tôr′ī) A bulging or rounded projection or swelling, such as is caused by a bone or muscle. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for torus torus [ tôr′əs ] Plural tori (tôr′ī) A surface generated by rotating a circle about an axis that is in the same plane as the circle but does not intersect it. A torus resembles a donut and is a subtype of toroid. The torus-shaped apparatus that contains plasma in nuclear fusion reactors. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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