nontracheal

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*dʰreh₂gʰ-
15. Proto-Indo-European*dʰréh₂gʰus
16. Proto-Hellenic*tʰrākʰús
17. Ancient Greekτρᾱχεῖᾰ (trākheîă)
18. Late Latintrāchīa
19. Medieval Latintrāchēa
20. Englishtrachea
21. Proto-Indo-European*h₂el-
22. Proto-Indo-European*h₂élisder.?
23. Englishtracheal
24. English todaynontracheal

From non- + tracheal.