Lexic.us

Definition of Halogen

1. Noun. Any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions.

Definition of Halogen

1. n. An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine.

Definition of Halogen

1. Noun. (chemistry) Any element of group 7, i.e. fluorine, chlorine, bromine, iodine and astatine, which form a salt by direct union with a metal. ¹

¹ Source: wiktionary.com

Definition of Halogen

1. a nonmetallic element [n -S]

Medical Definition of Halogen

1. An electronegative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; sometimes, also, fluorine and cyanogen. See Chlorine family, under Chlorine. Origin: Gr. "als, "alos, salt + -gen: cf. F. Halogene. Source: Websters Dictionary (01 Mar 1998)

Lexicographical Neighbors of Halogen

Literary usage of Halogen

Below you will find example usage of this term as found in modern and/or classical literature:

1. Journal of the American Chemical Society by American Chemical Society (1879)
"Bonding in Donor-Acceptor Complexes. II. Electrostatic Contributions to Changes in the Infrared Spectrum of Benzene-halogen ..."

2. A Text-book of Organic Chemistry by Arnold Frederik. Holleman (1920)
"A contrast is presented by the m-halogen-nitrobenzenes, their halogen being almost as difficult to replace as that in the unsub- stituted ..."

3. Elements of the Comparative Anatomy of Vertebrates by Gustav Mann, Walther Löb, Henry William Frederic Lorenz, Robert Wiedersheim, William Newton Parker, Thomas Jeffery Parker, Harry Clary Jones, Sunao Tawara, Leverett White Brownell, Max Julius Louis Le Blanc, Willis Rodney Whitney, John Wesley Brown, Wi (1906)
"halogen-albumins arise, as Blum and Hofmeister have shown, by the replacement of one or of several of the hydrogen-atoms in one or several of the aromatic ..."

4. Treatise on General and Industrial Organic Chemistry by Ettore Molinari (1921)
"DERIVATIVES OF THE ACIDS I. halogen DERIVATIVES One or more of the hydrogen ... The halogen derivatives of the acids, thus obtained, are more markedly acid ..."

5. Analytical Chemistry by Frederick Pearson Treadwell (1921)
"The free halogen can be removed by shaking the distillate with chloroform (cf. p ... After the removal of the free halogen, the distillate may be tested for ..."

6. Light's Labour's Lost: Policies for Energy-Efficient Lighting by Paul Waide, Satoshi Tanishima, International Energy Agency (2006)
"halogen capsule lamp. halogen PAR lamp. halogen reflector lamp. Sources: Courtesy of Philips Lighting (top and centre); Courtesy of European Lamp Companies ..."

7. Organic Chemistry by William Henry Perkin (1907)
"halogen DERIVATIVES OF BENZENE AND ITS HOMOLOGUES. The action of halogens on benzene has already been referred to (p. 313), and it has been pointed ont that ..."

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