Etymology

atoroidal

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Today it means: Not toroidal; that does not consist of or contain a torus. Full definition →

English toroidal ← Ancient Greek ἀ- (a-) ← Proto-Hellenic *ə-
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The story

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Hellenic*ə-
  4. Ancient Greekἀ- (a-)
  5. Englisha-
  6. Englishtoroidal
  7. English todayatoroidal

From a- + toroidal.

Etymology from Wiktionary, CC BY-SA 4.0.