Etymology

isocoumarin

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Today it means: An isomer of coumarin in which the orientation of the lactone is reversed Full definition →

English coumarin ← Ancient Greek ῐ̓́σος (ĭ́sos)
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The story

  1. Ancient Greekῐ̓́σος (ĭ́sos)
  2. Englishiso-
  3. Englishcoumarin
  4. English todayisocoumarin

From iso- + coumarin.

Etymology from Wiktionary, CC BY-SA 4.0.