setoid

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noun

A set together with an equivalence relation.

OriginAncient Greek εἶδος (eîdos) ← Proto-Hellenic *wéidos ← Proto-Indo-European *wéydos →
Scrabble 7
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Meanings

nounsetoid (plural setoids)

plural setoids

  1. mathematicsA set together with an equivalence relation.

Origin

  1. Middle Englishset
  2. Englishset
  3. Proto-Indo-European*weyd-
  4. Proto-Indo-European*wéydos
  5. Proto-Hellenic*wéidos
  6. Ancient Greekεἶδος (eîdos)
  7. Englishsetoid

From set + -oid.

Full word history & related roots →

Rhymes & wordplay

Anagrams

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Cite this entry
APA

setoid. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/setoid

MLA

“setoid.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/setoid. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “setoid,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/setoid.

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