ethereous

from The Collaborative International Dictionary of English v.0.48

Ethereous \E*the"re*ous\, a. [L.aethereus, Gr. ? See {Ether}.]
   1. Formed of ether; ethereal. [Obs.]
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            This ethereous mold whereon we stand. --Milton.
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   2. (Chem.) Pertaining to, or resembling, ether.
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   {Ethereous oil}. See {Ethereal oil}, under {Ethereal}.
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