Where does “εβδομαδιαίος” come from?

εβδομαδιαίος (Greek) comes from Greek εβδομάδα, from Ancient Greek ἑβδομάς, from Ancient Greek ἑπτά, from Proto-Hellenic heptə́, from Proto-Indo-European septḿ̥ — seven.

εβδομαδιαίος (Greek): weekly

Definitions

weekly

Ancestry of “εβδομαδιαίος”, step by step

Step	Language	Word	Meaning
1	Greek	εβδομάδα	week
2	Ancient Greek	ἑβδομάς	A group of seven, "especially" a week of seven...
3	Ancient Greek	ἑπτά	seven
4	Proto-Hellenic	heptə́	seven
5	Proto-Indo-European	septḿ̥	seven

Every word from Proto-Indo-European septḿ̥ →Every word from Proto-Hellenic heptə́ →Every word from Ancient Greek ἑπτά →