palaeobiomechanical

The story

1. Proto-Indo-European*kʷelh₁-der.?
2. Ancient Greekπάλαι (pálai)
3. Ancient Greekπᾰλαιός (pălaiós)
4. Englishpaleo-
5. Englishpalaeo-
6. Proto-Indo-European*gʷeyh₃-
7. Ancient Greekβῐ́ος (bĭ́os)
8. Ancient Greekβῐο- (bĭo-)
9. Englishbio-
10. Proto-Indo-European*megʰ-der.?
11. Ancient Greekμηχανή (mēkhanḗ)
12. Ancient Greekμηχανικός (mēkhanikós)
13. Latinmēchanicus
14. Old Frenchmecanique
15. Middle Englishmechanic
16. Proto-Indo-European*h₂el-
17. Proto-Indo-European*h₂élisder.?
18. Middle Englishmechanical
19. Englishmechanical
20. Englishbiomechanical
21. English todaypalaeobiomechanical

From palaeo- + biomechanical.