to·​roid ˈtȯr-ˌȯid How to pronounce toroid (audio)
: a surface generated by a closed plane curve rotated about a line that lies in the same plane as the curve but does not intersect it
: a body whose surface has the form of a toroid

Examples of toroid in a Sentence

Recent Examples on the Web So, although the vacuum vessel is still basically a toroid, the magnets that loop around the tube are not planar. Chris Lee, Ars Technica, 9 June 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'toroid.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin torus

First Known Use

1886, in the meaning defined at sense 1

Time Traveler
The first known use of toroid was in 1886

Dictionary Entries Near toroid

Cite this Entry

“Toroid.” Dictionary, Merriam-Webster, Accessed 2 Dec. 2023.

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