1. a doughnut-shaped three-dimensional geometric figure formed by rotating a circle around an axis
Usage: mathematics; geometry
2. a large convex molding at the base of a column
Usage: architecture
3. a rounded ridge or swelling
Usage: anatomy; botany

Examples

• The mathematician drew a torus to illustrate the concept of topology.
• A bagel has the shape of a torus.
• The ancient column featured an ornate torus at its base.
• The architect studied classical examples of torus moldings.
• In botany, the torus is the receptacle of a flower.
• The anatomical structure formed a distinct torus shape.
• Students learned to calculate the surface area of a torus.