Where does “Τετάρτη” come from?

Τετάρτη (Koine Greek) comes from Ancient Greek τέταρτος, from Ancient Greek ἡμέρα, from Ancient Greek ἦμαρ, from Proto-Hellenic ā́mər, from Proto-Indo-European h₂eh₃mr̥, from Proto-Indo-European h₂eh₃- — to be hot; to burn.

Ancestry of “Τετάρτη”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	τέταρτος	fourth; fourthly; the fourth day
2	Ancient Greek	ἡμέρα	day; a time of life of a particular type or...
3	Ancient Greek	ἦμαρ	day; by day; midday
4	Proto-Hellenic	ā́mər	day
5	Proto-Indo-European	h₂eh₃mr̥	heat
6	Proto-Indo-European	h₂eh₃-	to be hot; to burn

Words derived from “Τετάρτη”

Τετάρτη

Every word from Proto-Indo-European h₂eh₃- →Every word from Proto-Indo-European h₂eh₃mr̥ →Every word from Proto-Hellenic ā́mər →