Where does “ethnicon” come from?

ethnicon (English) comes from Ancient Greek ἐθνικόν, from Ancient Greek ἐθνικός, from Ancient Greek ἔθνος, from Ancient Greek ἔθω, from Proto-Indo-European swe-dʰh₁-, from Proto-Indo-European dʰeh₁- — to do, put, place.

ethnicon (English): name of a tribe; ethnonym

Definitions

name of a tribe; ethnonym

Ancestry of “ethnicon”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ἐθνικόν	—
2	Ancient Greek	ἐθνικός	national
3	Ancient Greek	ἔθνος	group of people: tribe, family; group of animals:...
4	Ancient Greek	ἔθω	I am accustomed, I tend to
5	Proto-Indo-European	swe-dʰh₁-	—
6	Proto-Indo-European	dʰeh₁-	to do, put, place

Every word from Proto-Indo-European dʰeh₁- →Every word from Proto-Indo-European swe-dʰh₁- →Every word from Ancient Greek ἔθω →