alkylborane

The story

1. Akkadian𒎎𒋆𒁉𒍣𒁕 (guḫlum)
2. Aramaicכוחלא (kuḥlā)
3. Arabicكُحْل (kuḥl)
4. Andalusian Arabicكُحُول (kuḥūl)
5. Medieval Latinalcoho
6. Middle Englishalcofol
7. Englishalc(ohol)
8. Proto-Indo-European*swel-der.?
9. Ancient Greekῡ̔́λη (hū́lē)
10. Englishalkyl
11. Middle Persian*bōrag
12. Arabicبَوْرَق (bawraq)
13. Medieval Latinborax
14. Anglo-Normanboreis
15. Middle Englishboras
16. Englishborax
17. Englishboro-
18. Proto-Indo-European*kerh₃-der.?
19. Latincarbōnem
20. Frenchcarbone
21. Englishcarbonbf.
22. Englishbor(on)
23. Englishborane
24. English todayalkylborane

From alkyl + borane.