transglycosylase

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-Hellenic*dlukús
10. Ancient Greekγλῠκῠ́ς (glŭkŭ́s)
11. Proto-Hellenic*dléukus?
12. Ancient Greekγλεῦκος (gleûkos)
13. Frenchglucose
14. Englishglucosebf.
15. Englishglycose
16. Proto-Indo-European*swel-der.?
17. Ancient Greekῡ̔́λη (hū́lē)
18. Englishglycosyl
19. Proto-Indo-European*dwóh₁
20. Proto-Indo-European*trísinflu.
21. Proto-Indo-European*dwís
22. Ancient Greekδιά (diá)
23. Ancient Greekδῐᾰ- (dĭă-)
24. Proto-Indo-European*steh₂-
25. Proto-Indo-European*stísteh₂ti
26. Proto-Hellenic*hístāmi
27. Ancient Greekῐ̔́στημῐ (hĭ́stēmĭ)
28. Ancient Greekδῐῐ̈́στημῐ (dĭĭ̈́stēmĭ)
29. Ancient Greekδῐᾰ́στᾰσῐς (dĭắstăsĭs)
30. Englishdiastase
31. English todaytransglycosylase

From trans- + glycosyl + -ase.