orbifold

O1R1B3I1F4O1L1D2
US/ˈɔɹ.bɪˌfoʊld/UK/ˈɔː.bɪˌfəʊld/

noun

A topological space in which every small enough neighborhood is homeomorphic to a quotient of real space by the action of a finite group.

UncommonScrabble 14
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

nounorbifold (plural orbifolds)

plural orbifolds

  1. mathematicsA topological space in which every small enough neighborhood is homeomorphic to a quotient of real space by the action of a finite group.

Origin

Blend of orbit + manifold. Named by William Thurston.

Full word history & related roots →
Cite this entry
APA

orbifold. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/orbifold

MLA

“orbifold.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/orbifold. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “orbifold,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/orbifold.

Source: orbifold on Wiktionary, CC BY-SA 4.0.