electrophotographically

The story

1. Frenchélectro-
2. Ancient Greekἤλεκτρον (ḗlektron)
3. Latinēlectrum
4. Latinelectro-
5. Englishelectro-
6. Proto-Indo-European*bʰeh₂-
7. Proto-Indo-European*bʰéh₂os
8. Proto-Hellenic*pʰáwos
9. Ancient Greekφᾰ́ος (phắos)
10. Ancient Greekφῶς (phôs)
11. Ancient Greekφωτο- (phōto-)
12. Englishphoto-
13. Proto-Indo-European*gerbʰ-
14. Proto-Hellenic*grə́pʰō
15. Ancient Greekγρᾰ́φω (grắphō)
16. Ancient Greekγραφή (graphḗ)
17. Englishphoto-
18. Ancient Greekγράφω (gráphō)
19. Englishphotograph
20. Englishphotographic
21. Englishelectrophotographic
22. Proto-Indo-European*h₂el-
23. Proto-Indo-European*h₂élisder.?
24. Proto-Indo-European*leyg-
25. Proto-Germanic*līką
26. English todayelectrophotographically

From electrophotographic + -ally.