noun
torus
TOR-us/ˈtɔrəs/
A rounded ring-shaped form.
The clay torus has a smooth surface and a central hole.
Etymology
Latin torus meant a swelling or bulge, and the architectural term named a rounded molding at a column's base. That rounded profile connects it with the doughnut-shaped object; the Latin word's deeper origin is uncertain.
In context
If you're on a torus and you take a rope that goes around say the outer diameter torus, there's no way it can't get through the hole. There is no way to contract it
More examples
- She slides three wooden tori onto the rod.
- A stone torus curves around the base of the column.
- The diagram shows a torus sliced into two equal halves.
Forms
torus · tori · toruses
toroidal adjective — Having the shape of a torus.
Similar words
- ring
- A circular band that need not have rounded thickness.
- doughnut
- An informal name for this shape, also a pastry.