Toroid (geometry)
WordNet
noun
(1) A ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
(2) The doughnut-shaped object enclosed by a torus
WiktionaryText
Noun
- A surface generated by a closed curve (especially a circle) rotating about, but not intersecting or containing, an axis in its own plane
- A ring-shaped object whose surface is a torus
Quotations
- 1994: The photon belt, a huge torroid [sic] shaped object composed of photon light particles, was first discovered by your scientists in 1961 near the vicinity of the Pleiades by satellite instrumentation. — You are Becoming a Galactic Human, by Virginia Essene and Sheldon Nidel, ISBN 0937147087, pp. 27–28