Etymology

pseudogroup

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Today it means: An algebraic structure having elements that are homeomorphisms between subsets of a space Full definition →

English group ← Italian gruppo ← French groupe
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The story

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

From pseudo- + group.

Etymology from Wiktionary, CC BY-SA 4.0.