Where does “stérh₃mn̥” come from?

stérh₃mn̥ (Proto-Indo-European) comes from Proto-Indo-European sterh₃-, from Proto-Indo-European ster- — sterile, infertile.

Ancestry of “stérh₃mn̥”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	sterh₃-	to spread, extend, stretch out
2	Proto-Indo-European	ster-	sterile, infertile

stérh₃mn̥ — Etymology, Origin & Word History | Etymology Explorer