ether

ether
1. Any organic compound in which two carbon atoms are independently linked to a common oxygen atom, thus containing the group –C–O–C–. SEE ALSO: epoxy. 2. Loosely used to refer to diethyl e. or an anesthetic e., although a large number of ethers have anesthetic properties. For individual ethers, see the specific name. [G. aither, the pure upper air]
- anesthetic e. general designation for many ethers.
- glycol ethers chemicals such as ethylene glycol monomethyl e. and ethylene glycol monoethyl e.; they are teratogens which induce testicular atrophy in animals.
- solvent e. a fairly pure form of e. (C4H10O) but not sufficiently pure for anesthesia; used as a solvent.
- xylostyptic e. SYN: styptic collodion.

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ether 'ē-thər n
1) a medium that in the wave theory of light permeates all space and transmits transverse waves
2 a) a light volatile flammable liquid C4H10O used esp. formerly chiefly as an anesthetic called also diethyl ether, ethyl ether, ethyl oxide
b) any of various organic compounds characterized by an oxygen atom attached to two carbon atoms

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n.
a volatile liquid formerly used as an anaesthetic administered by inhalation, though now largely replaced by safer and more efficient drugs. It also has laxative action when administered by mouth. Ether irritates the respiratory tract and affects the circulation.

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(eґthər) [L. aether, from Gr. aithēr “the upper and purer air”] 1. an organic compound having an oxygen atom bonded to two carbon atoms; general formula, R–O–R′. 2. [USP] a colorless, volatile, flammable liquid, C2H5OC2H5, with a characteristic odor; the first inhalational anesthetic used for surgical anesthesia (1846), now little used because of its flammability. Called also diethyl e. and ethyl e.

Medical dictionary. 2011.

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  • ÉTHER — La notion d’éther est aussi vieille que la physique, mais sa signification a considérablement varié, suivant en cela l’évolution des théories et les progrès de l’expérience. Oscillant entre l’idée de feu, de lumière et celle de représentation… …   Encyclopédie Universelle

  • Ether — E ther ([=e] th[ e]r), n. [L. aether, Gr. a iqh r, fr. a i qein to light up, kindle, burn, blaze; akin to Skr. idh, indh, and prob. to E. idle: cf. F. [ e]ther.] [Written also {[ae]ther}.] 1. (Physics) A medium of great elasticity and extreme… …   The Collaborative International Dictionary of English

  • Ether — Éther Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom …   Wikipédia en Français

  • Ether — [ e:tɐ]: vgl. ↑ Äther. * * * Ether 〈m. 3; unz.; Chem.; fachsprachl.〉 = Äther * * * E|ther [griech. aithe̅̓r = obere Luft, Himmelsluft; vgl. Äther (1)], der; s, ; veraltete S: Äther: 1) Gruppenbez. für org. Verb. der allg. Formel R1 O R2, wobei… …   Universal-Lexikon

  • ether — late 14c., upper regions of space, from O.Fr. ether and directly from L. aether the upper pure, bright air, from Gk. aither upper air; bright, purer air; the sky, from aithein to burn, shine, from PIE root *aidh to burn (see EDIFICE (Cf.… …   Etymology dictionary

  • ether — ► NOUN 1) (also diethyl ether) a volatile, highly flammable liquid used as an anaesthetic and as a solvent. 2) Chemistry any organic compound with an oxygen atom linking two alkyl groups. 3) (also aether) chiefly literary the clear sky; the upper …   English terms dictionary

  • ether — [ē′thər] n. [ME < L aether < Gr aithēr < aithein, to kindle, burn < IE base * aidh > L aestas, summer, OE ætan, to burn] 1. a substance hypothesized by the ancients as filling all space beyond the sphere of the moon, and making up… …   English World dictionary

  • ETHER — civitas in tribu Iudae. Iosuae c. 15. v. 42. Lat. oratio, sive deprecatio …   Hofmann J. Lexicon universale

  • Ether — vgl. ↑Äther …   Das große Fremdwörterbuch

  • ether — atmosphere, *air, ozone …   New Dictionary of Synonyms

  • Ether — vgl. 2Äther …   Die deutsche Rechtschreibung

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