Editing Toroidal

{{wiktionary|toroidal}}
'''Toroidal''' describes something which resembles or relates to a [[torus]] or [[toroid]]:
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==Mathematics==
*[[Toroidal coordinates]], a three-dimensional orthogonal coordinate system
*[[Toroidal and poloidal coordinates]], directions for a three-dimensional system which follows a circular ring around the surface
*[[Toroidal graph]], a graph whose vertices can be placed on a torus such that no edges cross
*Toroidal [[grid network]], an n-dimensional grid connected circularly in more than one dimension
*[[Toroidal polyhedron]], partition of a toroidal surface into polygons

==Engineering==
*[[Toroidal engine]], an internal combustion engine with pistons that rotate inside a ring-shaped cylinder
*[[Toroidal expansion joint]], a metallic assembly consisting of a series of circular tubes used in high pressure applications
*[[Toroidal inductors and transformers]], a type of electrical device using magnetic cores with a ring or donut shape
*[[Toroidal propeller]], a loop-shaped propeller used in aviation and maritime transport
*[[Toroidal reflector]], a reflector whose surface is a section of a torus which has a different focal distance depending on the angle of the mirror

==Other uses==
*[[Toroidal planet]], planet in the shape of a toroidal or doughnut shape
*[[Toroidal ring model]] in theoretical physics
*[[Toroidal solenoid]], 1946 design for a fusion power device
*[[Vortex ring]], also known as a toroidal vortex; a toroidal flow in fluid mechanics

==See also==
*[[Atoroidal]]
*[[Torus (disambiguation)]]

{{Disambiguation}}