Where does “săptămânucă” come from?

săptămânucă (Romanian) comes from Romanian săptămână, from Late Latin septimana, from Latin septimānus, from Latin septimus, from Latin Septem, from Proto-Italic septem, from Proto-Indo-European septḿ̥ — seven.

Ancestry of “săptămânucă”, step by step

Step	Language	Word	Meaning
1	Romanian	săptămână	week
2	Late Latin	septimana	week
3	Latin	septimānus	of or pertaining to the seventh in a series
4	Latin	septimus	seventh
5	Latin	Septem	seven; 7
6	Proto-Italic	septem	seven
7	Proto-Indo-European	septḿ̥	seven

Every word from Proto-Indo-European septḿ̥ →Every word from Proto-Italic septem →Every word from Latin Septem →