ether
definition: a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic
example:
speech part: noun
synonyms:
ethoxyethane
definition: a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves
example:
speech part: noun
synonyms:
aether
definition: any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom
example:
speech part: noun
synonyms:
definition: the fifth and highest element after air and earth and fire and water
example:
speech part: noun
synonyms:
quintessence