Where does “g(e)id-” come from?

g(e)id- (Proto-Balto-Slavic) comes from Proto-Indo-European ǵʰéydʰ-.

Ancestry of “g(e)id-”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	ǵʰéydʰ-	—

g(e)id- — Etymology, Origin & Word History | Etymology Explorer