preclinical

The story

1. Proto-Indo-European*per-
2. Proto-Indo-European*preh₂-
3. Proto-Indo-European*préh₂i?
4. Proto-Italic*prai
5. Proto-Italic*prai-
6. Latinprae-
7. Middle Englishpre-
8. Englishpre-
9. Proto-Indo-European*ḱel-
10. Proto-Indo-European*ḱley-
11. Proto-Indo-European*ḱl̥néyti
12. Proto-Hellenic*klíňňō
13. Ancient Greekκλῑ́νω (klī́nō)
14. Ancient Greekκλῑ́νη (klī́nē)
15. Ancient Greekκλῑνῐκός (klīnĭkós)
16. Late Latinclīnicus
17. Frenchclinique
18. Englishclinic
19. Proto-Indo-European*h₂el-
20. Proto-Indo-European*h₂élisder.?
21. Englishclinical
22. English todaypreclinical

From pre- + clinical.