Definition of ethers:
(n) :
(uncountable, colloquial) The atmosphere or space as a medium for broadcasting radio and television signals; also, a notional space through which Internet and other digital communications take place; cyberspace.
(n) :
(uncountable, colloquial) A particular quality created by or surrounding an object, person, or place; an atmosphere, an aura.
(n) :
(uncountable, organic chemistry) Diethyl ether (C₄H₁₀O), an organic compound with a sweet odour used in the past as an anaesthetic.
(n) :
(countable, organic chemistry) Any of a class of organic compounds containing an oxygen atom bonded to two hydrocarbon groups.
(n) :
(by extension) The medium breathed by human beings; the air.
(n) :
(uncountable, literary or poetic) The substance formerly supposed to fill the upper regions of the atmosphere above the clouds, in particular as a medium breathed by deities.