glycopeptide

The story

1. Proto-Hellenic*dlukús
2. Ancient Greekγλῠκῠ́ς (glŭkŭ́s)
3. Englishglyco-
4. Proto-Indo-European*pekʷ-
5. Proto-Indo-European*pékʷ-ye-
6. Proto-Hellenic*pét͏̌t͏̌ō
7. Ancient Greekπέσσω (péssō)bf.
8. Ancient Greekπέπτω (péptō)
9. Ancient Greekπεπτόν (peptón)
10. GermanPepton
11. Englishpeptone
12. Proto-Indo-European*dʰeh₁-
13. GermanPepton
14. GermanPeptid
15. Englishpeptide
16. English todayglycopeptide

From glyco- + peptide.