phosphodisaccharide

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-Indo-European*dwóh₁
15. Proto-Indo-European*dwi-
16. Proto-Hellenic*dwi-
17. Ancient Greekδῐ- (dĭ-)
18. Latindi-
19. Englishdi-
20. Proto-Indo-European*ḱorkeh₂
21. Proto-Indo-Iranian*ćárkaraH
22. Proto-Indo-Aryan*śárkaraH
23. Sanskritशर्क॑रा (śárkarā)
24. Palisakkharā
25. Ancient Greekσάκχαρ (sákkhar)
26. Latinsaccharon
27. Latinsaccharum
28. Englishsaccharo-
29. Proto-Indo-European*dʰeh₁-
30. Englishsaccharide
31. Englishdisaccharide
32. English todayphosphodisaccharide

From phospho- + disaccharide.