Etymology

macrolactam

M3A1C3R1O1L1A1C3T1A1M3

Today it means: A macrocyclic lactam Full definition →

English lactam ← Proto-Indo-European *dʰeh₁- ← Latin ammoniacus
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The story

  1. Proto-Indo-European*meh₂ḱ-
  2. Proto-Indo-European*mh₂ḱrós
  3. Proto-Hellenic*makrós
  4. Ancient Greekμᾰκρός (măkrós)
  5. Frenchmacro-
  6. Englishmacro-
  7. Latinlac
  8. Englishlacto-
  9. GermanKeton
  10. Englishketone
  11. Englishlac(tone)
  12. Egyptianjmn
  13. Ancient GreekᾸ̓́μμων (Ắmmōn)
  14. LatinAmmōn
  15. Latinammoniacus
  16. Englishammonia
  17. Proto-Indo-European*dʰeh₁-
  18. Englisham(ide)
  19. Englishlactam
  20. English todaymacrolactam

From macro- + lactam.

Etymology from Wiktionary, CC BY-SA 4.0.