Where does “septemvirātus” come from?

septemvirātus (Latin) comes from Latin septemvir, from Latin septem, from Proto-Italic septem, from Proto-Indo-European septḿ̥ — seven.

Ancestry of “septemvirātus”, step by step

Step	Language	Word	Meaning
1	Latin	septemvir	septemvir
2	Latin	septem	seven; 7
3	Proto-Italic	septem	seven
4	Proto-Indo-European	septḿ̥	seven

septemvirātus — Etymology, Origin & Word History | Etymology Explorer