nonbiomechanical

The story

1. Proto-Indo-European*né
2. Proto-Germanic*ne
3. Proto-Indo-European*ís?
4. Proto-Indo-European*h₁óynos
5. Proto-Germanic*ainaz
6. Proto-Germanic*nainaz
7. Proto-West Germanic*nain
8. Old Englishnān
9. Middle Englishnon
10. Old Englishnān
11. Old Englishnān-
12. Middle Englishnon-
13. Englishnon-
14. Proto-Indo-European*gʷeyh₃-
15. Ancient Greekβῐ́ος (bĭ́os)
16. Ancient Greekβῐο- (bĭo-)
17. Englishbio-
18. Proto-Indo-European*megʰ-der.?
19. Ancient Greekμηχανή (mēkhanḗ)
20. Ancient Greekμηχανικός (mēkhanikós)
21. Latinmēchanicus
22. Old Frenchmecanique
23. Middle Englishmechanic
24. Proto-Indo-European*h₂el-
25. Proto-Indo-European*h₂élisder.?
26. Middle Englishmechanical
27. Englishmechanical
28. Englishbiomechanical
29. English todaynonbiomechanical

From non- + biomechanical.