Where does “eter” come from?

eter (Romanian) comes from French éther, from Latin aetherius, from Ancient Greek αἰθέριος, from Ancient Greek Αἰθήρ, from Ancient Greek αἴθω, from Proto-Hellenic *áitʰō — to ignite.

eter (Romanian): ether; air, sky, atmosphere

Definitions

ether; air, sky, atmosphere

Ancestry of “eter”, step by step

Step	Language	Word	Meaning
1	French	éther	ether
2	Latin	aetherius	Of or pertaining to the ether, the sky, or the...
3	Ancient Greek	αἰθέριος	of or pertaining to the upper air; ethereal,...
4	Ancient Greek	Αἰθήρ	Upper Air
5	Ancient Greek	αἴθω	To ignite, kindle, light; To burn, blaze
6	Proto-Hellenic	*áitʰō	to ignite

Every word from Proto-Hellenic *áitʰō →Every word from Ancient Greek αἴθω →Every word from Ancient Greek Αἰθήρ →