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1. (n.) ether
(formerly) one of a class of compounds in which two organic groups are attached directly to an oxygen atom, having the general formula ROR.
2. ether
upper regions of space; the clear sky; the heavens.
3. ether
the medium supposed by the ancients to fill the upper regions of space.
4. ether
a substance formerly supposed to occupy all space, accounting for the propagation of electromagnetic radiation through space.
Etymology: (1350–1400; < L aethēr the upper air, ether < Gk aithēr, akin to aíthein to glow, burn)
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| Definition of 'ether' |
Princeton's WordNet |
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1. (noun) quintessence, ether
the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies
2. (noun) ether
any of a class of organic compounds that have two hydrocarbon groups linked by an oxygen atom
3. (noun) ether, aether
a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves
4. (noun) ether, ethoxyethane, divinyl ether, vinyl ether, diethyl ether, ethyl ether
a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic
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| Definition of 'ether' |
Webster Dictionary |
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1. (noun) ether
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. (noun) ether
supposed matter above the air; the air itself
3. (noun) ether
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 anaesthetic. Called also ethyl oxide
4. (noun) ether
any similar oxide of hydrocarbon radicals; as, amyl ether; valeric ether
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| Definitions of 'ether' |
The Nuttall Encyclopedia |
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1. ether
a volatic liquid prepared from the distillation of alcohol and sulphuric acid at high temperature; is colourless, and emits a sweet, penetrating odour; is highly combustible; a useful solvent, and an important anæsthetic.
2. ether
a subtle element presumed to pervade all interstellar space, vibrations in which are assumed to account for the transmission of light and all radiant energy.
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| Definition of 'ether' |
The Standard Electrical Dictionary |
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1. ether
The ether is a hypothetical thing that was invented to explain the phenomena of light. Light is theoretically due to transverse vibrations of the ether. Since the days of Young the conception of the ether has extended, and now light, "radiant heat," and electricity are all treated as phenomena of the ether. Electrical attraction and repulsion are explained by considering them due to local stresses in the ether; magnetic phenomena as due to local whirlpools therein. The ether was originally called the luminiferous ether, but the adjective should now be dropped. Its density is put at 936E-21 that of water, or equal to that of the atmosphere at 210 miles above the earth's surface. Its rigidity is about 1E-9 that of steel (see Ten, Powers of); as a whole it is comparable to an all-pervading jelly, with almost perfect elasticity. The most complete vacuum is filled with ether.
All this is a hypothesis, for the ether has never been proved to exist. Whether gravitation will ever be explained by It remains to be seen.
[Transcriber's note: The Michelson-Morley experiment in 1887 (five years before this book) cast serious doubt on the ether. In 1905 Einstein explained electromagnetic phenomenon with photons. In 1963 Edward M. Purcell used special relativity to derive the existence of magnetism and radiation.]
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Sense: a colourless liquid used to dissolve fats etc, and, medically, as an anaesthetic.
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 Afrikaans: eter |
 Arabic: الأثير |
 Bulgarian: етер |
 Brazilian: éter |
 Czech: éter |
 German: derÄther |
 Danish: æter |
 Greek: αιθέρας |
 Spanish: éter |
 Estonian: eeter |
 Farsi: اتر |
 Finnish: eetteri |
 French: éther |
 Hebrew: אֶתֶר |
 Hindi: रंग रहित द्रव |
 Croatian: eter |
 Hungarian: éter |
 Indonesian: eter |
 Icelandic: eter |
 Italian: etere |
 Japanese: エーテル |
 Korean: 에테르 |
 Lithuanian: eteris |
 Latvian: ēteris |
 Malay: cecair eter |
 Dutch: ether |
 Norwegian: eter |
 Polish: eter |
 Persian: اتر |
 Pashto: اثير، دفضا لوړې سيمى، هغه |
 Portuguese: éter |
 Romanian: eter |
 Russian: эфир |
 Slovak: éter |
 Slovenian: eter |
 Serbian: etar |
 Swedish: eter |
 Thai: สารอีเธอร์ |
 Turkish: eter, lokman ruhu |
 Taiwanese: 乙醚, 以太 |
 Ukrainian: ефір |
 Urdu: ایک بے رنگ آتشگیر نامیاتی |
 Vietnamese: ête |
 Chinese: 乙醚，以太 |
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