Noun: toroid 'to,royd or 'tó,royd
- A ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
"The shape of a donut is a classic example of a toroid";
- torus
- The doughnut-shaped object enclosed by a torus
"The magnetic core of the transformer was a toroid"
Derived forms: toroids
Type of: round shape, solid
Encyclopedia: Toroid