toroid

to·roid  (tôroid, tr-)

n.

1. Mathematics

a. A surface generated by a closed curve rotating about, but not intersecting or containing, an axis in its own plane.

b. A solid having such a surface.

2. A body having the shape of a toroid.

---

[tor(us) + -oid.]

---

to·roidal (tô-roidl) adj.

---

toroid  (tôroid)

A surface generated by rotating a closed curve about an axis that is in the same plane as the curve but does not intersect it.

Thesaurus

Noun	1.	toroid - the doughnut-shaped object enclosed by a torus solid - a three-dimensional shape anchor ring, annulus, doughnut, halo, ring - a toroidal shape; "a ring of ships in the harbor"; "a halo of smoke"
	2.	toroid - a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle torus magnetic core, core - (computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories; "each core has three wires passing through it, providing the means to select and detect the contents of each bit" round shape - a shape that is curved and without sharp angles