azabicyclo

The story

1. Proto-Indo-European*né
2. Proto-Indo-European*n̥-
3. Proto-Hellenic*ə-
4. Ancient Greekᾰ̓- (ă-)
5. Proto-Indo-European*gʷeyh₃-
6. Proto-Indo-European*gʷih₃wós
7. Proto-Indo-European*gʷíh₃weti
8. Proto-Hellenic*gʷyṓw-ō
9. Proto-Hellenic*d͏̌ṓwō
10. Ancient Greekζώω (zṓō)
11. Ancient Greekζῶ (zô)
12. Ancient Greekζωή (zōḗ)
13. Frenchazote
14. Englishazote
15. Englishaza-
16. Proto-Indo-European*dwóh₁
17. Proto-Indo-European*dwi-
18. Proto-Italic*dwi-
19. Latinbi-
20. Englishbi-
21. Proto-Indo-European*kʷelh₁-redup.
22. Proto-Indo-European*kʷékʷlos
23. Proto-Hellenic*kʷókʷlos
24. Proto-Hellenic*kúklos
25. Ancient Greekκύκλος (kúklos)
26. Late Latincyclus
27. Middle Englishcicle
28. Englishcycle
29. Ancient Greekκύκλος (kúklos)
30. Ancient Greekκυκλῐκός (kuklĭkós)
31. Classical Latincyclicu
32. Middle Frenchcyclique
33. Frenchcyclique
34. Classical Latincyclicus
35. Englishcyclic
36. Englishcyclo-
37. Englishbicyclo
38. English todayazabicyclo

From aza- + bicyclo.