elastase

The story

1. Proto-Indo-European*h₁elh₂-
2. Proto-Indo-European*h₁l̥h₂-tós
3. Ancient Greekἐλᾰστός (elăstós)
4. New Latinelasticu
5. Frenchélastique
6. Englishelastic
7. Englishelastin
8. Proto-Indo-European*dwóh₁
9. Proto-Indo-European*trísinflu.
10. Proto-Indo-European*dwís
11. Ancient Greekδιά (diá)
12. Ancient Greekδῐᾰ- (dĭă-)
13. Proto-Indo-European*steh₂-
14. Proto-Indo-European*stísteh₂ti
15. Proto-Hellenic*hístāmi
16. Ancient Greekῐ̔́στημῐ (hĭ́stēmĭ)
17. Ancient Greekδῐῐ̈́στημῐ (dĭĭ̈́stēmĭ)
18. Ancient Greekδῐᾰ́στᾰσῐς (dĭắstăsĭs)
19. Englishdiastase
20. English todayelastase

From elastin + -ase.