ETHER

• (noun) a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic

  synonyms : diethyl ether , divinyl ether , ethoxyethane , ethyl ether , vinyl ether

• (noun) a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves

  synonyms : aether

• (noun) any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom

• (noun) 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

  Only heavenly bodies are made up of quintessence. -added by naila_inlas

WordNet® 3.0, © 2006 by Princeton University.

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