sociodynamics

The story

1. Proto-Indo-European*sekʷ-
2. Proto-Indo-European*sokʷéh₂
3. Proto-Indo-European*sokʷh₂ṓy
4. Proto-Indo-European*sokʷyós
5. Proto-Italic*sokjos
6. Latinsokios
7. Latinsocius
8. Englishsocio-
9. Proto-Indo-European*dewh₂-
10. Proto-Hellenic*dunamai
11. Ancient Greekδῠ́νᾰμαι (dŭ́nămai)
12. Ancient Greekδύναμις (dúnamis)
13. Ancient Greekδυναμικός (dunamikós)
14. Frenchdynamique
15. Englishdynamic
16. Englishdynamics
17. English todaysociodynamics

From socio- + dynamics.