Etymology

lactamase

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Today it means: Any enzyme that catalyzes the opening of a lactam ring, especially one that deactivates a lactam-containing antibiotic Full definition →

English diastase ← Ancient Greek δῐᾰ́στᾰσῐς (dĭắstăsĭs) ← Proto-Hellenic *hístāmi
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The story

  1. Latinlac
  2. Englishlacto-
  3. GermanKeton
  4. Englishketone
  5. Englishlac(tone)
  6. Egyptianjmn
  7. Ancient GreekᾸ̓́μμων (Ắmmōn)
  8. LatinAmmōn
  9. Latinammoniacus
  10. Englishammonia
  11. Proto-Indo-European*dʰeh₁-
  12. Englisham(ide)
  13. Englishlactam
  14. Proto-Indo-European*dwóh₁
  15. Proto-Indo-European*trísinflu.
  16. Proto-Indo-European*dwís
  17. Ancient Greekδιά (diá)
  18. Ancient Greekδῐᾰ- (dĭă-)
  19. Proto-Indo-European*steh₂-
  20. Proto-Indo-European*stísteh₂ti
  21. Proto-Hellenic*hístāmi
  22. Ancient Greekῐ̔́στημῐ (hĭ́stēmĭ)
  23. Ancient Greekδῐῐ̈́στημῐ (dĭĭ̈́stēmĭ)
  24. Ancient Greekδῐᾰ́στᾰσῐς (dĭắstăsĭs)
  25. Englishdiastase
  26. English todaylactamase

From lactam + -ase.

Etymology from Wiktionary, CC BY-SA 4.0.