1. (n.) 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. (n.) Supposed matter above the air; the air itself.

3. (n.) 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 anesthetic. Called also ethyl oxide.

4. (n.) Any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether.

Caelus Dry Ice Freon Olympian heights Pentothal acme aerial heights air airy nothing ammonia apex azure blue sky bubble caelum canopy canopy of heaven carbon dioxide cerulean chaff chip chloroform cobweb cocaine coolant cope cork dizzy heights down dust elevation eminence empyrean ethyl chloride ethylene fairy feather firmament flue fluff foam freezing mixture froth fuzz gas gossamer heaven heavens height heights hyaline ice ice cubes illusion lift lifts liquid air liquid helium liquid oxygen menthol mist mote nitrous oxide ozone phantom raise refrigerant rise rising ground shadow sky smoke spirit sponge spume starry heaven steep stratosphere straw the blue the blue serene thin air thistledown uprise vantage ground vantage point vapor vault vault of heaven welkin zenith


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