TORUS Definition & Meaning

torus

[ tawr-uhs ]

Phonetic (Standard)IPA

noun

plural tori

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.
1. Rarely . a doughnut-shaped surface generated by the revolution of a conic section, especially a circle, about an exterior line lying in its plane.
2. the solid enclosed by such a surface.
Botany.
1. the receptacle of a flower.
2. 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.

torus

/ ˈ��ɔː��ə�� /

noun

Also calledtore 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
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

torus

/ ��ô��′ə�� /

, Plural tori ��ô��′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.

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�y��vlog History and Origins

Origin of torus¹

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

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�y��vlog History and Origins

Origin of torus¹

C16: from Latin: a swelling, of obscure origin

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Example Sentences

Examples have not been reviewed.

A puffy donut-shaped cloud of material called a torus surrounds the accretion disk.

From

As with most active galaxies, NGC 4945's black hole and disk are shrouded by a dense cloud of dust called a torus, which blocks some of that light.

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Kelly, who gained popularity in 2016 with her debut album “Unbreakable Smile,” has been promoting her upcoming EP “tori” on social media.

From

One of the most popular is the tokamak, a device that creates a magnetic field to contain the burning plasma generated by a fusion reaction in a doughnut-shaped ‘torus’.

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One eruption could push more ionized gas into the torus.

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