Definition of torus
noun (plural tori /ˈtôrī/ or toruses)
1 Geometry a surface or solid formed by rotating a closed curve, especially a circle, around a line that lies in the same plane but does not intersect it (e.g., like a ring-shaped doughnut). a thing of this shape, especially a large ring-shaped chamber used in physical research.
2 Architecture a large convex molding, typically semicircular in cross section, especially as the lowest part of the base of a column.
3 Anatomy a ridge of bone or muscle:the maxillary torus
4 Botany the receptacle of a flower.
