Where does “séptimo” come from?

séptimo (Spanish) comes from Latin septimus, from Latin Septem, from Proto-Italic septem, from Proto-Indo-European septḿ̥ — seven.

séptimo (Spanish): seventh

Definitions

Step	Language	Word	Meaning
1	Latin	septimus	seventh
2	Latin	Septem	—
3	Proto-Italic	septem	seven
4	Proto-Indo-European	septḿ̥	seven

séptimo — Etymology, Origin & Word History | Etymology Explorer