a. [ L.aethereus, Gr. &unr_; See Ether. ] 1. Formed of ether; ethereal. [ Obs. ] [ 1913 Webster ] This ethereous mold whereon we stand. Milton. [ 1913 Webster ] 2. (Chem.) Pertaining to, or resembling, ether. [ 1913 Webster ] Ethereous oil. See Ethereal oil, under Ethereal. [ 1913 Webster ]
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