ethyl ether

ethyl ether
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 tenuity, once 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}. It is no longer believed that such a medium is required for the transmission of electromagnetic waves; the modern use of the term is mostly a figurative term for {empty space}, or for literary effect, and not intended to imply the actual existence of a physical medium. However. modern cosmological theories based on quantum field theory do not rule out the possibility that the inherent energy of the vacuum is greater than zero, in which case the concept of an ether pervading the vacuum may have more than metaphoric meaning. [1913 Webster +PJC]

2. Supposed matter above the air; the air itself. [1913 Webster]

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 a powerful solvent of fats, resins, and pyroxylin, but finds its chief use as an an[ae]sthetic. Commonly called {ethyl ether} to distinguish it from other ethers, and also {ethyl oxide}. (b) Any similar compound in which an oxygen atom is bound to two different carbon atoms, each of which is part of an organic radical; as, amyl ether; valeric ether; methyl ethyl ether. The general formular for an ether is {ROR'}, in which R and R' are organic radicals which may be of similar or different structure. If R and R' are different parts of the same organic radical, the structure forms a cyclic ether. [1913 Webster +PJC]

{Complex ether}, {Mixed ether} (Chem.), an ether in which the ether oxygen is attached to two radicals having different structures; as, ethyl methyl ether, {C2H5.O.CH3}.

{Compound ether} (Chem.), an ethereal salt or a salt of some hydrocarbon as the base; an ester.

{Ether engine} (Mach.), a condensing engine like a steam engine, but operated by the vapor of ether instead of by steam. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • ethyl ether — n. see ETHER (sense 4) …   English World dictionary

  • ethyl ether — noun a colorless volatile highly inflammable liquid formerly used as an inhalation anesthetic • Syn: ↑ether, ↑ethoxyethane, ↑divinyl ether, ↑vinyl ether, ↑diethyl ether • Derivationally related forms: ↑ethereal ( …   Useful english dictionary

  • ethyl ether — Chem. ether (def. 1). [1875 80] * * * ▪ chemical compound also called  diethyl ether        well known anesthetic, commonly called simply ether, an organic compound belonging to a large group of compounds called ethers; its molecular structure… …   Universalium

  • ethyl ether — SYN: diethyl ether. * * * ethyl ether n ETHER (2a) * * * ether (def. 2) …   Medical dictionary

  • ethyl ether — dietileteris statusas T sritis chemija formulė (C₂H₅)₂O atitikmenys: angl. diethyl ether; ethyl ether rus. диэтиловый эфир; серный эфир; этиловый эфир ryšiai: sinonimas – etileteris …   Chemijos terminų aiškinamasis žodynas

  • ethyl ether — noun Date: 1878 ether 3a …   New Collegiate Dictionary

  • ethyl ether — noun An alternative name for diethyl ether …   Wiktionary

  • ethyl ether — eth′yl e′ther n. chem. ether 1) • Etymology: 1875–80 …   From formal English to slang

  • ethyl ether — /ɛθəl ˈiθə/ (say ethuhl eethuh), /iθaɪl/ (say eethuyl) noun See ether (def. 1b) …   Australian English dictionary

  • phenyl ethyl ether — Chem. phenetole. * * * …   Universalium

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