nonanatomically

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*h₂en-
15. Proto-Hellenic*aná
16. Ancient Greekᾰ̓νᾰ́ (ănắ)
17. Ancient Greekἀνα- (ana-)
18. Proto-Indo-European*temh₁-
19. Ancient Greekτέμνω (témnō)
20. Ancient Greekἀνατέμνω (anatémnō)
21. Ancient Greekἀνατομή (anatomḗ)
22. Latinanatomia
23. Frenchanatomie
24. Frenchanatomique
25. Latinanatomicus
26. Englishanatomic
27. Proto-Indo-European*h₂el-
28. Proto-Indo-European*h₂élisder.?
29. Englishanatomical
30. Proto-Indo-European*leyg-
31. Proto-Germanic*līką
32. Englishanatomically
33. English todaynonanatomically

From non- + anatomically.