gonadectomy

The story

1. Proto-Indo-European*ǵenh₁-redup.
2. Proto-Indo-European*ǵíǵn̥h₁eti
3. Proto-Hellenic*gígnomai
4. Ancient Greekγίγνομαι (gígnomai)
5. Ancient Greekγονή (gonḗ)
6. New Latingonadēs
7. Englishgonad
8. Proto-Indo-European*h₁éǵʰ
9. Proto-Indo-European*h₁eǵʰs
10. Proto-Hellenic*eks
11. Ancient Greekἐκ (ek)
12. Ancient Greekἐκ- (ek-)
13. Proto-Indo-European*temh₁-
14. Ancient Greekτέμνω (témnō)
15. Ancient Greekἐκτέμνω (ektémnō)
16. Ancient Greekἐκτομή (ektomḗ)
17. English todaygonadectomy

From gonad + -ectomy.