polysurgical

The story

1. Proto-Indo-European*pleh₁-
2. Proto-Indo-European*polh₁ús
3. Ancient Greekπολῠ́ς (polŭ́s)
4. Englishpoly-
5. Proto-Indo-European*ǵʰes-
6. Proto-Indo-European*ǵʰésōr
7. Proto-Hellenic*kʰéhər
8. Ancient Greekχείρ (kheír)
9. Proto-Indo-European*werǵ-
10. Proto-Indo-European*worǵós
11. Proto-Hellenic*worgós
12. Ancient Greekχειρουργός (kheirourgós)
13. Ancient Greekχειρουργῐκός (kheirourgĭkós)
14. Late Latinchīrurgicus
15. Proto-Indo-European*h₂el-
16. Proto-Indo-European*h₂élisder.?
17. Medieval Latincirurgicālis
18. Middle Frenchcirurgica
19. Middle Englishcirurgical
20. Englishsurgical
21. English todaypolysurgical

From poly- + surgical.