Etymology

isoindene

I1S1O1I1N1D2E1N1E1

Today it means: A flammable polycyclic hydrocarbon with the chemical formula C₉H₈, composed of a cyclohexadiene ring fused with a cyclopentadiene ring. Full definition →

English indene ← Dutch indigo ← Spanish índigo
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The story

  1. Ancient Greekῐ̓́σος (ĭ́sos)
  2. Englishiso-
  3. Proto-Indo-Iranian*síndʰuš
  4. Sanskritसिन्धु॑ (síndhu)
  5. Old Persian𐏃𐎡𐎯𐎢𐏁 (hiⁿdūš)
  6. Ancient GreekἸνδός (Indós)
  7. Ancient GreekἸνδία (Indía)
  8. Ancient GreekἸνδικός (Indikós)
  9. LatinIndicu
  10. Spanishíndico
  11. Spanishíndigo
  12. Portugueseendego
  13. Spanishíndigo
  14. Dutchindigo
  15. Englishind(igo)
  16. Englishindene
  17. English todayisoindene

From iso- + indene.

Etymology from Wiktionary, CC BY-SA 4.0.