pseudogroup

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noun

An algebraic structure having elements that are homeomorphisms between subsets of a space

OriginEnglish group ← Italian gruppo ← French groupe →
Scrabble 17
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Meanings

nounpseudogroup (plural pseudogroups)

plural pseudogroups

  1. mathematicsAn algebraic structure having elements that are homeomorphisms between subsets of a space
  2. chemistryAny group of the extended periodic table containing lanthanides or actinides

Origin

  1. Ancient Greekψεύδω (pseúdō)
  2. Ancient Greekψευδής (pseudḗs)
  3. Middle Englishpseudo-
  4. Englishpseudo-
  5. Italiangruppo
  6. Frenchgroupe
  7. Italiangruppo
  8. Englishgroup
  9. Englishpseudogroup

From pseudo- + group.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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