stereochemical

The story

1. Proto-Indo-European*ster-
2. Ancient Greekστερεός (stereós)
3. Ancient Greekστερεο- (stereo-)
4. Englishstereo-
5. Proto-Indo-European*ǵʰew-
6. Ancient Greekχῠ́μᾰ (khŭ́mă)
7. Ancient Greekχυμείᾱ (khumeíā)
8. Arabicالْكِيمِيَاء (al-kīmiyāʔ)
9. Medieval Latinalchēmia
10. Ancient Greekχυμείᾱ (khumeíā)influ.
11. New Latinchēmia
12. New Latinchēmicus
13. Proto-Indo-European*h₂el-
14. Proto-Indo-European*h₂élisder.?
15. Englishchemical
16. English todaystereochemical

From stereo- + chemical.