ether

n. முகில் மண்டலத்துக்கு அப்பாற்பட்ட தூய வான வௌத, விசும்பு, இயலுலகெங்கணும் இடையற நிரம்பி மின்காந்த அலைகளின் இயக்கத்துக்குரியதாகக் கருதப்படும் ஊடுபொருள், மயக்க மருந்தாகப் பயன்படுகிற எளிதில் ஆவியாகக்கூடிய சேர்மநீர்மவகை.

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E"ther, n. Etym: [L. aether, Gr. idh, indh, and prob. to E. idle: cf. F. éther.] [Written also æther.] 1. (Physics) Defn: A medium of great elasticity and extreme tenuity, supposed to pervade all space, the interior of solid bodies not excepted, and to be the medium of transmission of light and heat; hence often called luminiferous ether. 2. Supposed matter above the air; the air itself. 3. (Chem.) (a) A light, volatile, mobile, inflammable liquid, (C2H5)2O, of a characteristic aromatic odor, obtained by the distillation of alcohol with sulphuric acid, and hence called also sulphuric ether. It is powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an anæsthetic. Called also ethyl oxide.ethyl ether. (b) Any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether. Complex ether, Mixed ether (Chem.), an oxide of two different radicals in the same molecule; as, ethyl methyl ether,

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