torus

Meanings

Plural: tori, toruses

Noun

• a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
• commonly the lowest molding at the base of a column
• The standard representation of such a space in 3-dimensional Euclidean space: a surface or solid formed by rotating a closed curve, especially a circle, about a line which lies in the same plane but does not intersect it (e.g. like a ring doughnut).
• A topological space which is a product of two circles.
• The standard representation of such a space in 3-dimensional Euclidean space: a surface or solid formed by rotating a closed curve, especially a circle, about a line which lies in the same plane but does not intersect it (e.g. like a ring doughnut).
• A topological space which is a product of two circles.
• The product of the specified number of circles.
• The standard representation of such a space in 3-dimensional Euclidean space: a surface or solid formed by rotating a closed curve, especially a circle, about a line which lies in the same plane but does not intersect it (e.g. like a ring doughnut).
• A ring-shaped object, especially a large ring-shaped chamber used in physical research.
• A large convex molding, typically semicircular in cross section, which commonly projects at the base of a column and above the plinth.
• A rounded ridge of bone or muscle, especially one on the occipital bone.
• The end of the peduncle or flower stalk to which the floral parts (or in the Asteraceae, the florets of a flower head) are attached.
• The thickening of a membrane closing a wood-cell pit (as of gymnosperm tracheids) having the secondary cell wall arched over the pit cavity.

Synonyms

receptacle, thalamus, tore, toroid

Related Words

annulus, hoop, torus tubarius