Where does “iūmenta” come from?

iūmenta (Latin) comes from Latin iumentum, from Old Latin iouxmentom, from Proto-Italic jouksmentom.

Ancestry of “iūmenta”, step by step

Step	Language	Word	Meaning
1	Latin	iumentum	A draft animal, a beast of burden, a large...
2	Old Latin	iouxmentom	—
3	Proto-Italic	jouksmentom	—

iūmenta — Etymology, Origin & Word History | Etymology Explorer