Where does “septiens” come from?

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

Ancestry of “septiens”, step by step

StepLanguageWordMeaning
1LatinSeptemseven; 7
2Proto-Italicseptemseven
3Proto-Indo-Europeanseptḿ̥seven
Every word from Proto-Indo-European septḿ̥ →Every word from Proto-Italic septem →Every word from Latin Septem →