Etymology

heptahelicene

H4E1P3T1A1H4E1L1I1C3E1N1E1

Today it means: The helicene having seven benzene rings fused into a flat spiral Full definition →

English helicene ← Ancient Greek ἑπτᾰ́ (heptắ) ← Proto-Hellenic *heptə́
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The story

  1. Proto-Afroasiatic*sṗɣ?
  2. Proto-Semitic*šabʕ-bor.?
  3. Proto-Indo-European*septḿ̥
  4. Proto-Hellenic*heptə́
  5. Ancient Greekἑπτᾰ́ (heptắ)
  6. Englishhepta-
  7. Englishhelicene
  8. English todayheptahelicene

From hepta- + helicene.

Etymology from Wiktionary, CC BY-SA 4.0.