Etymology

diethyl

D2I1E1T1H4Y4L1

Today it means: Two ethyl groups attached to the same molecule. Full definition →

English ethyl ← German Ethy ← Ancient Greek ῡ̔́λη (hū́lē)
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The story

  1. Proto-Indo-European*dwóh₁
  2. Proto-Indo-European*dwi-
  3. Proto-Hellenic*dwi-
  4. Ancient Greekδῐ- (dĭ-)
  5. Latindi-
  6. Englishdi-
  7. Proto-Indo-European*h₂eydʰ-
  8. Proto-Hellenic*áitʰō
  9. Ancient Greekαἴθω (aíthō)
  10. Ancient Greekᾱ̓ήρ (āḗr)influ.?
  11. Ancient Greekαἰθήρ (aithḗr)
  12. Latinaethēr
  13. GermanÄther
  14. GermanEther
  15. Proto-Indo-European*swel-der.?
  16. Ancient Greekῡ̔́λη (hū́lē)
  17. GermanEthy
  18. Englishethyl
  19. English todaydiethyl

From di- + ethyl.

Etymology from Wiktionary, CC BY-SA 4.0.