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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core - (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories; "each core has three wires passing through it, providing the means to select and detect the contents of each bit"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 ?
Additionally, Torus National's ratings reflect the expectation that risk-adjusted capitalisation will be maintained at a strong level on a standalone basis, AM Best elaborated.
Equilateral Torus II, 2002, also contributes to the mildly tongue-in-cheek nostalgia for "the modern" that characterizes this show.
The patient was administered oroendotracheal general anesthesia, and she underwent a transnasal endoscopic excision of the torus tubarius lesion.
Torus palatinus (TP) is usually located along me- dian palatine suture involving both processi palatine.
20 August 2010 - AM Best placed on Thursday under review with "positive" implications the B+(good) financial strength rating and the "bbb-" issuer credit rating on US Torus National Insurance Co.
All other investigated species of Notelaea, Nestegia, and Phillyrea lacked a torus (Fig.
A small patch of a sphere or torus surface looks almost like a piece of a flat plane and has area rather than volume.
Aspirated pit membranes in which the membrane with its torus was displaced so as to occlude an aperture were noted in both freshly collected and herbarium specimens, but were more common in the latter (Fig.
The images, released last month, show that the brightness of the torus has slowly declined over the past few months.