torus

/ˈtɔrəs/
noun
  1. A large convex molding used in architecture, especially at the base of a column.
    • The architect designed a smooth torus to transition from the column to the floor.
    • The ancient Greek column had a prominent torus at its base.
    • Students in art class learned to draw the torus as part of a classical column.
  2. A doughnut-shaped surface or solid, like a ring or a tire tube.
    • In geometry class, we studied the properties of a torus.
    • A bagel is a good example of a torus shape.
    • The magnetic field around the planet formed a torus of charged particles.
  3. A rounded ridge or swelling on a plant or animal body part.
    • A torus of tissue surrounded the insect's antenna base.
    • The palm of the hand has a fleshy torus near the thumb.
    • The botanist noted the torus on the stem where the leaf attached.
Synonyms
What does "torus" mean? | whatsthatwordmean | whatsthatwordmean