Etymology

irrotational

I1R1R1O1T1A1T1I1O1N1A1L1

Today it means: Not rotating or not pertaining to rotation. Full definition →

English rotational ← Proto-Indo-European *h₂élisder.? ← Latin rotātiō
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The story

  1. Proto-Indo-European*né
  2. Proto-Indo-European*n̥-
  3. Proto-Italic*n̥-
  4. Latinin-
  5. Latinir-
  6. Englishir-
  7. Proto-Indo-European*Hreth₂-
  8. Proto-Indo-European*Hróth₂eh₂
  9. Proto-Italic*rotā
  10. Latinrota
  11. Latinrotō
  12. Latinrotātiō
  13. Englishrotation
  14. Proto-Indo-European*h₂el-
  15. Proto-Indo-European*h₂élisder.?
  16. Englishrotational
  17. English todayirrotational

From ir- + rotational.

Etymology from Wiktionary, CC BY-SA 4.0.