ether

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ether clear sky; (phys.) substance permeating space XVII; (chem.) liquid obtained by the action of acid on alcohol XVIII. — (O)F. éther or L. æthēr — Gr. aithḗr upper air, f. base of aĩthein kindle, burn, shine, aĩthrā fine weather, L. æstās summer, OIr. aed fire.
So etherial of the ether; heavenly; airy XVI; impalpable XVII; pert. to ether XVIII. f. L. ætherius — Gr. aithérios. Hence etherialize XIX.

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