EnglishMain Dictionary
ether
Universal Words
noun [U]
1 a colourless liquid made from alcohol, used in industry as a SOLVENT and, in the past, in medicine to make people unconscious before an operation
2 (the ether) (old use or literary) the upper part of the sky:
Her words disappeared into the ether.
3 (the ether) the air, when it is thought of as the air in which radio or electronic communication takes place