supermicrosurgical

The story

1. Proto-Indo-European*úp
2. Proto-Indo-European*upér
3. Proto-Italic*super
4. Latinsuper
5. Latinsuper-
6. Englishsuper-
7. Proto-Indo-European*mey-der.?
8. Ancient Greekμῑκρός (mīkrós)
9. Ancient Greekμῑκρο- (mīkro-)
10. Englishmicro-
11. Proto-Indo-European*ǵʰes-
12. Proto-Indo-European*ǵʰésōr
13. Proto-Hellenic*kʰéhər
14. Ancient Greekχείρ (kheír)
15. Proto-Indo-European*werǵ-
16. Proto-Indo-European*worǵós
17. Proto-Hellenic*worgós
18. Ancient Greekχειρουργός (kheirourgós)
19. Ancient Greekχειρουργῐκός (kheirourgĭkós)
20. Late Latinchīrurgicus
21. Proto-Indo-European*h₂el-
22. Proto-Indo-European*h₂élisder.?
23. Medieval Latincirurgicālis
24. Middle Frenchcirurgica
25. Middle Englishcirurgical
26. Englishsurgical
27. Englishmicrosurgical
28. English todaysupermicrosurgical

From super- + microsurgical.