Etymology

isobutyl

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Today it means: The univalent hydrocarbon radical derived from isobutanol Full definition →

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

  1. Englishisobut(anol)
  2. Proto-Indo-European*swel-der.?
  3. Ancient Greekῡ̔́λη (hū́lē)
  4. English todayisobutyl

From isobut(anol) + -yl.

Etymology from Wiktionary, CC BY-SA 4.0.