Etymology

spiropentane

S1P3I1R1O1P3E1N1T1A1N1E1

Today it means: The simplest triangulane hydrocarbon, C₅H₈, consisting of two spiro-linked cyclopropane rings Full definition →

English pentane ← Latin spīra ← Ancient Greek σπεῖρα (speîra)
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The story

  1. Proto-Indo-European*sper-
  2. Proto-Indo-European*sper-yeh₂-
  3. Ancient Greekσπεῖρα (speîra)
  4. Latinspīra
  5. Englishspiro-
  6. Englishpentane
  7. English todayspiropentane

From spiro- + pentane.

Etymology from Wiktionary, CC BY-SA 4.0.