Etymology

isopropyl

I1S1O1P3R1O1P3Y4L1

Today it means: The univalent organic radical (CH₃)₂CH-. Full definition →

English propyl ← French propyl- ← Ancient Greek ῡ̔́λη (hū́lē)
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The story

  1. Ancient Greekῐ̓́σος (ĭ́sos)
  2. Englishiso-
  3. Frenchpropionique
  4. Proto-Indo-European*swel-der.?
  5. Ancient Greekῡ̔́λη (hū́lē)
  6. Frenchpropyl-
  7. Englishpropyl
  8. English todayisopropyl

From iso- + propyl.

Etymology from Wiktionary, CC BY-SA 4.0.