torus

1. 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.

   A 4-variable Karnaugh map can be thought of, topologically, as being a torus.

   Torus

   торtor, торtor

   торtor

2. A topological space which is a product of two circles.

   (in compounds, usually)The product of the specified number of circles.

3. 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.

4. A large convex molding, typically semicircular in cross section, which commonly projects at the base of a column and above the plinth.

   Wulst

   commonly the lowest molding at the base of a column

5. A rounded ridge of bone or muscle, especially one on the occipital bone.

6. 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.

7. The thickening of a membrane closing a wood-cell pit (as of gymnosperm tracheids) having the secondary cell wall arched over the pit cavity.

regular