Noun: torus (tori,toruses) to-rus
- A ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
"The shape of a donut is a classic example of a torus";
- toroid
- Commonly the lowest moulding at the base of a column
"The architect pointed out the intricate design of the torus on the classical column";
- tore
Derived forms: toruses, tori
Type of: molding [N. Amer], moulding [Brit, Cdn], round shape
Encyclopedia: Torus