Etymology

epimer

E1P3I1M3E1R1

Today it means: Any diastereoisomer that has the opposite configuration at only one of the stereogenic centres. Full definition →

Ancient Greek μέρος (méros) ← Proto-Hellenic *(h)méros ← Proto-Indo-European *(s)méros
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The story

  1. Proto-Indo-European*h₁ep-
  2. Proto-Indo-European*h₁éps
  3. Proto-Indo-European*h₁épi
  4. Proto-Hellenic*epí
  5. Ancient Greekἐπί (epí)
  6. Ancient Greekἐπῐ- (epĭ-)
  7. Englishepi-
  8. Proto-Indo-European*(s)mer-
  9. Proto-Indo-European*(s)méros
  10. Proto-Hellenic*(h)méros
  11. Ancient Greekμέρος (méros)
  12. English todayepimer

From epi- + -mer.

Etymology from Wiktionary, CC BY-SA 4.0.