biosocial

The story

1. Proto-Indo-European*gʷeyh₃-
2. Ancient Greekβῐ́ος (bĭ́os)
3. Ancient Greekβῐο- (bĭo-)
4. Englishbio-
5. Proto-Indo-European*sekʷ-
6. Proto-Indo-European*sokʷéh₂
7. Proto-Indo-European*sokʷh₂ṓy
8. Proto-Indo-European*sokʷyós
9. Proto-Italic*sokjos
10. Latinsokios
11. Latinsocius
12. Proto-Indo-European*h₂el-
13. Proto-Indo-European*h₂élisder.?
14. Latinsociāli
15. Middle Frenchsocia
16. Englishsocial
17. English todaybiosocial

From bio- + social.