Where does “septimanam” come from?

septimanam (Late Latin) comes from Latin septimana, from Latin septimanus, from Latin -anus, from Latin -um, from Proto-Italic *-om, from Proto-Indo-European *-oHom.

septimanam (Late Latin): accusative singular of septimāna

Definitions

accusative singular of septimāna

Ancestry of “septimanam”, step by step

Step	Language	Word	Meaning
1	Latin	septimana	week
2	Latin	septimanus	of or pertaining to the seventh in a series
3	Latin	-anus	Of or pertaining to; -ian
4	Latin	-um	nominative neuter singular of -us; accusative...
5	Proto-Italic	*-om	—
6	Proto-Indo-European	*-oHom	—

Every word from Proto-Indo-European *-oHom →Every word from Latin -um →Every word from Latin -anus →