Toroid may refer to:
- Toroid (geometry), a doughnut-like solid whose surface is a torus. (For other uses of this term see Toroid disambiguation page In mathematics a toroid is a Doughnut -shaped object such In Geometry, a torus (pl tori) is a Surface of revolution generated by revolving a Circle in three dimensional space about an axis Coplanar
- Toroidal inductors and transformers which have wire windings on circular ring shaped magnetic cores. Toroidal inductors and transformers are electronic components typically consisting of a circular ring-shaped Magnetic core of iron powder Ferrite, or other
- Vortex ring, a toroid-shaped flow in fluid mechanics. A vortex ring, also called a toroidal vortex, is a region of rotating Fluid moving through the same or different fluid where the flow pattern takes on a
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