noun
- plural of torus.
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. and column.
- Geometry.
- 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.
noun
- the plural of torus
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
fem. proper name, short for Victoria.
1560s, from Latin torus “a swelling, bulge, knot; cushion, couch.”
n. pl. to•ri (tôr′ī)
- A bulging or rounded projection or swelling, such as is caused by a bone or muscle.
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.