Ether etymology in English

Etymology Blog

English word ether comes from Proto-Indo-European *h₂eydʰ-

Dictionary entry	Language	Definition
*h₂eydʰ-	Proto-Indo-European (ine)
αἴθω	Ancient Greek (grc)
αἰθήρ	Ancient Greek (grc)
aether	Latin (lat)	The air or sky; light of day. The brightness or ethereal matter surrounding a deity. The upper world, the earth (as opposed to the lower world). The upper, pure, bright air; ether; the heavens.
ether	Old French (fro)
ether	English (en)	(ancient philosophy, and, alchemy, uncountable) A classical physical element, considered as prevalent in the heavens and inaccessible to humans. In some versions of alchemy, this was the fifth element in addition to air, earth, fire and water.. (historical, physics, uncountable) A substance (aether) once thought to fill all space that allowed electromagnetic waves to pass through it and [...]

Ether etymology