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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.]


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]


(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]
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core - (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories; "each core has three wires passing through it, providing the means to select and detect the contents of each bit"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


n (pl -ri o -ruses) torus m; — palatinus torus palatino
References in periodicals archive ?
Contract:Golden gates housing trust (gght) part of the torus group are leading a large multi-agency partnership called new leaf to deliver the building better opportunities programme across warrington and cheshire east and west.
The firm's expertise and experience was fundamental to supporting Golden Gates Housing Trust and Helena Partnerships when they wanted to form a new group structure as equal partners, with greater capacity and influence - Torus Group.
Three months on, Torus group chief executive Rob Young and Torus group chair and former Wirral Council chief executive Graham Burgess share their vision of the future not just for Torus but for the region too.