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nouna colorless volatile highly flammable liquid formerly used as an inhalation anesthetic
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nouna medium that was once supposed to fill all space and to support the propagation of electromagnetic waves
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nounthe fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies
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nounany of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atomtype of:
Usage of ether
- "archaism"
- "archaicism"