iodoalkane

The story

1. Proto-Hellenic*wion
2. Ancient Greekἴον (íon)
3. Proto-Indo-European*weyd-
4. Proto-Indo-European*wéydos
5. Proto-Hellenic*wéidos
6. Ancient Greekεἶδος (eîdos)
7. Ancient Greekἰοειδής (ioeidḗs)
8. Englishiodo-
9. Akkadian𒎎𒋆𒁉𒍣𒁕 (guḫlum)
10. Aramaicכוחלא (kuḥlā)
11. Arabicكُحْل (kuḥl)
12. Andalusian Arabicكُحُول (kuḥūl)
13. Medieval Latinalcoho
14. GermanAlk(ohol)
15. Proto-Indo-European*swel-der.?
16. Ancient Greekῡ̔́λη (hū́lē)
17. GermanAlkyl
18. Germanalk-
19. GermanAlkan
20. Englishalkane
21. English todayiodoalkane

From iodo- + alkane.