phonautograph

The story

1. Proto-Indo-European*bʰeh₂-
2. Proto-Hellenic*pʰōnā́
3. Ancient Greekφωνή (phōnḗ)
4. Englishphono-
5. Proto-Indo-European*h₂ew
6. Proto-Indo-European*tó-
7. Proto-Hellenic*autós
8. Proto-Indo-European*h₂ew
9. Ancient Greekαὖ (aû)
10. Ancient Greekτόν (tón)
11. Ancient Greekαὐτός (autós)
12. Ancient Greekαὐτο- (auto-)
13. Englishauto-
14. Proto-Indo-European*gerbʰ-
15. Proto-Hellenic*grə́pʰō
16. Ancient Greekγράφω (gráphō)
17. English todayphonautograph

From phono- + auto- + -graph.