transpeptidase

The story

1. Proto-Indo-European*terh₂-
2. Proto-Indo-European*térh₂t
3. Proto-Indo-European*tr̥h₂ónts
4. Proto-Indo-European*tr̥h₂n̥ts
5. Proto-Italic*trāns
6. Proto-Italic*trāns-
7. Latintrans-
8. Englishtrans-
9. Proto-Indo-European*pekʷ-
10. Proto-Indo-European*pékʷ-ye-
11. Proto-Hellenic*pét͏̌t͏̌ō
12. Ancient Greekπέσσω (péssō)bf.
13. Ancient Greekπέπτω (péptō)
14. Ancient Greekπεπτόν (peptón)
15. GermanPepton
16. Englishpeptone
17. Proto-Indo-European*dʰeh₁-
18. GermanPepton
19. GermanPeptid
20. Englishpeptide
21. Proto-Indo-European*dwóh₁
22. Proto-Indo-European*trísinflu.
23. Proto-Indo-European*dwís
24. Ancient Greekδιά (diá)
25. Ancient Greekδῐᾰ- (dĭă-)
26. Proto-Indo-European*steh₂-
27. Proto-Indo-European*stísteh₂ti
28. Proto-Hellenic*hístāmi
29. Ancient Greekῐ̔́στημῐ (hĭ́stēmĭ)
30. Ancient Greekδῐῐ̈́στημῐ (dĭĭ̈́stēmĭ)
31. Ancient Greekδῐᾰ́στᾰσῐς (dĭắstăsĭs)
32. Englishdiastase
33. Englishpeptidase
34. English todaytranspeptidase

From trans- + peptidase.