serodynamic

The story

1. Proto-Indo-European*ser-
2. Proto-Indo-European*sér-o-
3. Proto-Italic*serom
4. Latinserum
5. Englishserum
6. Englishsero-
7. Proto-Indo-European*dewh₂-
8. Proto-Hellenic*dunamai
9. Ancient Greekδῠ́νᾰμαι (dŭ́nămai)
10. Ancient Greekδύναμις (dúnamis)
11. Ancient Greekδυναμικός (dunamikós)
12. Frenchdynamique
13. Englishdynamic
14. English todayserodynamic

From sero- + dynamic.