1. (noun) quintessence, ether
the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies
Synonyms: quintessence, ether, aether, ethyl ether, divinyl ether, diethyl ether, vinyl ether, ethoxyethane
2. (noun) ether
any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom
Synonyms: quintessence, divinyl ether, ethyl ether, vinyl ether, ethoxyethane, diethyl ether, aether
3. (noun) ether, aether
a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves
Synonyms: quintessence, ether, aether, ethyl ether, divinyl ether, diethyl ether, vinyl ether, ethoxyethane
4. (noun) ether, ethoxyethane, divinyl ether, vinyl ether, diethyl ether, ethyl ether
a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic
Synonyms: quintessence, ether, aether, ethyl ether, divinyl ether, diethyl ether, vinyl ether, ethoxyethane
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Synonyms for ether 
