Etymology

decyl

D2E1C3Y4L1

Today it means: Any of very many isomeric univalent hydrocarbon radicals, C₁₀H₂₁, formally derived from decane by the loss of a hydrogen atom Full definition →

Ancient Greek ῡ̔́λη (hū́lē) ← Proto-Indo-European *swel-der.? ← English decane
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The story

  1. Proto-Indo-European*déḱm̥
  2. Proto-Hellenic*dékə
  3. Ancient Greekδέκᾰ (dékă)
  4. Ancient Greekδεκάς (dekás)
  5. Late Latindecas
  6. Frenchdéca-
  7. Englishdeca-clip.
  8. Englishdec-
  9. Englishdecane
  10. Proto-Indo-European*swel-der.?
  11. Ancient Greekῡ̔́λη (hū́lē)
  12. English todaydecyl

From decane + -yl.

Etymology from Wiktionary, CC BY-SA 4.0.