epibacterial

The story

1. Proto-Indo-European*h₁ep-
2. Proto-Indo-European*h₁éps
3. Proto-Indo-European*h₁épi
4. Proto-Hellenic*epí
5. Ancient Greekἐπί (epí)
6. Ancient Greekἐπῐ- (epĭ-)
7. Englishepi-
8. Ancient Greekβακτηρία (baktēría)
9. Ancient Greekβακτήριον (baktḗrion)
10. New Latinbactēria
11. Englishbacteria
12. Proto-Indo-European*h₂el-
13. Proto-Indo-European*h₂élisder.?
14. Englishbacterial
15. English todayepibacterial

From epi- + bacterial.