gelatinase

The story

1. Proto-Indo-European*gel-
2. Latingelū
3. Latingelāre
4. Italiangelare
5. Italiangelatina
6. Frenchgélatine
7. Englishgelatin
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 todaygelatinase

From gelatin + -ase.