phosphoglycosylation

The story

1. Proto-Indo-European*bʰeh₂-
2. Proto-Indo-European*bʰéh₂os
3. Proto-Hellenic*pʰáwos
4. Ancient Greekφᾰ́ος (phắos)
5. Ancient Greekφῶς (phôs)
6. Proto-Indo-European*bʰer-
7. Proto-Indo-European*bʰéreti
8. Proto-Hellenic*pʰérō
9. Ancient Greekφέρω (phérō)
10. Ancient Greekφωσφόρος (phōsphóros)
11. Latinphōsphorus
12. Englishphosphorus
13. Englishphospho-
14. Proto-Hellenic*dlukús
15. Ancient Greekγλῠκῠ́ς (glŭkŭ́s)
16. Proto-Hellenic*dléukus?
17. Ancient Greekγλεῦκος (gleûkos)
18. Frenchglucose
19. Englishglucosebf.
20. Englishglycose
21. Proto-Indo-European*swel-der.?
22. Ancient Greekῡ̔́λη (hū́lē)
23. Englishglycosyl
24. Englishglycosylation
25. English todayphosphoglycosylation

From phospho- + glycosylation.