Where does “hēmionus” come from?

hēmionus (New Latin) comes from Ancient Greek ἡμῐ́ονος — half ass, mule.

Ancestry of “hēmionus”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἡμῐ́ονος	half ass, mule

hēmionus — Etymology, Origin & Word History | Etymology Explorer