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Definition of Torus
1. Noun. A ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle.
Exact synonyms: Toroid
Specialized synonyms: Core, Magnetic Core
Generic synonyms: Round Shape
Derivative terms: Toroidal
Specialized synonyms: Core, Magnetic Core
Generic synonyms: Round Shape
Derivative terms: Toroidal
2. Noun. Commonly the lowest molding at the base of a column.
Definition of Torus
1. n. A lage molding used in the bases of columns. Its profile is semicircular. See Illust. of Molding.
Definition of Torus
1. a large convex molding [n -RI]
Medical Definition of Torus
1. Structure found at the centre of a bordered pit, especially in conifers, forming a thickened region of the pit membrane. When subjected to a pressure gradient, it seals the pit by pressing against the pit border. This entry appears with permission from the Dictionary of Cell and Molecular Biology (11 Mar 2008)