Where does “gonomere” come from?

gonomere (English) comes from English gono-, from Ancient Greek γόνυ, from Proto-Hellenic gónu, from Proto-Indo-European ǵónu — knee.

Ancestry of “gonomere”, step by step

Step	Language	Word	Meaning
1	English	gono-	Alternative form of gon-
2	Ancient Greek	γόνυ	knee
3	Proto-Hellenic	gónu	knee
4	Proto-Indo-European	ǵónu	knee