Толковый словарь английского языка - ether
Ether
ether
noun see: edify Date: 14th century 1. the rarefied element formerly believed to fill the upper regions of space, the upper regions of space ; heavens, 2. a medium that in the wave theory of light permeates all space and transmits transverse waves, airwaves , 3. a light volatile flammable liquid C4H10O used chiefly as a solvent and especially formerly as an anesthetic, any of a class of organic compounds characterized by an oxygen atom attached to two carbon atoms, ~ic adjective
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1.
n. 1 Chem. a a colourless volatile organic liquid used as an anaesthetic or solvent. Also called DIETHYL ETHER, ETHOXYETHANE. Usage Chem. formula: C2H5OC2H5 b any of a class of organic compounds with a similar structure to this, having an oxygen joined to two alkyl etc. groups. 2 a clear sky; the upper regions of air beyond the clouds. 3 hist. a a medium formerly assumed to permeate space and fill the interstices between particles of matter. b a medium through which electromagnetic waves were formerly thought to be transmitted. Derivatives etheric adj. Etymology: ME f. OF ether or L aether f. Gk aither f. root of aitho burn, shine ...Толковый словарь английского языка Oxford English Reference
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