Toroidal

• Toroidal inductors and transformers, a type of electrical device
• Toroid, a doughnut-shaped object whose surface is a torus
• Toroidal and poloidal, directions in magnetohydrodynamics
• Toroidal coordinates, a three-dimensional orthogonal coordinate system
• Toroidal engine, an internal combustion engine with pistons that rotate within a toroidal space
• Toroidal graph, a graph whose vertices can be placed on a torus such that no edges cross
• Toroidal reflector, a parabolic reflector which has a different focal distance depending on the angle of the mirror

See also

• Atoroidal