What does aether mean?
A hypothetical substance once believed to be a weightless, invisible, and intangible material that was thought to fill all space and make up the heavens; a hypothetical medium for the transmission of light and other electromagnetic waves. It is now considered to be a mythological concept.
Example
"The ancient Greeks believed in the existence of aether as a divine substance."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.