preprophase

The story

1. Proto-Indo-European*per-
2. Proto-Indo-European*preh₂-
3. Proto-Indo-European*préh₂i?
4. Proto-Italic*prai
5. Proto-Italic*prai-
6. Latinprae-
7. Middle Englishpre-
8. Englishpre-
9. Proto-Indo-European*per-der.?
10. Proto-Indo-European*pér
11. Proto-Indo-European*pró
12. Ancient Greekπρό (pró)
13. Englishpro-
14. Proto-Indo-European*bʰeh₂-
15. Proto-Indo-European*bʰh₂nyéti
16. Proto-Hellenic*pʰáňňō
17. Ancient Greekφᾰ(ν)- (phă(n)-)
18. Ancient Greekφάσις (phásis)
19. New Latinphasis
20. Englishphase
21. Englishprophase
22. English todaypreprophase

From pre- + prophase.