clinicodiagnostic

The story

1. Proto-Indo-European*ḱel-
2. Proto-Indo-European*ḱley-
3. Proto-Indo-European*ḱl̥néyti
4. Proto-Hellenic*klíňňō
5. Ancient Greekκλῑ́νω (klī́nō)
6. Ancient Greekκλῑ́νη (klī́nē)
7. Ancient Greekκλῑνῐκός (klīnĭkós)
8. Late Latinclīnicus
9. Frenchclinique
10. Englishclinic
11. Englishclinico-
12. Proto-Indo-European*dwóh₁
13. Proto-Indo-European*trísinflu.
14. Proto-Indo-European*dwís
15. Ancient Greekδιά (diá)
16. Ancient Greekδια- (dia-)
17. Proto-Indo-European*ǵneh₃-
18. Proto-Indo-European*ǵn̥h₃sḱéti
19. Proto-Hellenic*gignṓskō
20. Ancient Greekγῐγνώσκω (gĭgnṓskō)
21. Ancient Greekδῐαγῐγνώσκω (dĭagĭgnṓskō)
22. Ancient Greekδῐᾰ́γνωσῐς (dĭắgnōsĭs)
23. Ancient Greekδῐᾰ- (dĭă-)
24. Proto-Indo-European*ǵneh₃-
25. Proto-Indo-European*ǵneh₃tis
26. Ancient Greekγνῶσις (gnôsis)
27. Ancient Greekγνωστῐκός (gnōstĭkós)
28. Ancient Greekδῐαγνωστῐκός (dĭagnōstĭkós)
29. Englishdiagnostic
30. English todayclinicodiagnostic

From clinico- + diagnostic.