TORES

noun

1. The surface described by the circumference of a circle revolving about a straight line in its own plane.
2. The solid enclosed by such a surface; an anchor ring.

noun

1. A topological space which is a product of two circles.
2. The standard representation of such a space in 3-dimensional Euclidean space: a shape consisting of a ring with a circular cross-section: the shape of an inner tube or hollow doughnut.
3. (in combination, n-torus, 4-torus, etc.) The product of the specified number of circles.