bipyrazyl

The story

1. Proto-Indo-European*dwóh₁
2. Proto-Indo-European*dwi-
3. Proto-Italic*dwi-
4. Latinbi-
5. Englishbi-
6. Proto-Indo-European*péh₂wr̥
7. Proto-Hellenic*pāwər
8. Ancient Greekπῦρ (pûr)
9. Latinpyr
10. Englishpyro-
11. Englishpyr-
12. Proto-Indo-European*né
13. Proto-Indo-European*n̥-
14. Proto-Hellenic*ə-
15. Ancient Greekᾰ̓- (ă-)
16. Proto-Indo-European*gʷeyh₃-
17. Proto-Indo-European*gʷih₃wós
18. Proto-Indo-European*gʷíh₃weti
19. Proto-Hellenic*gʷyṓw-ō
20. Proto-Hellenic*d͏̌ṓwō
21. Ancient Greekζώω (zṓō)
22. Ancient Greekζῶ (zô)
23. Ancient Greekζωή (zōḗ)
24. Frenchazote
25. Englishazote
26. Englishazo-
27. Englishazole
28. Englishpyrazole
29. Proto-Indo-European*swel-der.?
30. Ancient Greekῡ̔́λη (hū́lē)
31. Englishpyrazyl
32. English todaybipyrazyl

From bi- + pyrazyl.