Halogen

One of the elements in the next-to-last column of the periodic table - fluorine, chlorine, bromine, iodine, and astatine.
Found on http://www.encyclo.co.uk/local/20046

Halogen

A type of incandescent lamp with higher energy-efficiency that standard ones.
Found on http://www.epa.gov/OCEPAterms/

halogen

[n] - any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
Found on http://www.webdictionary.co.uk/definition.php?query=halogen

Halogen

Halogen is a particular group of elements with similar bonding properties, consisting of flourine, chlorine, bromine and iodine.HHeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKrRbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXeCsBaLaHfTaWReOsIrPtAuHgTlPbBiPoAtRnFrRaAcLanthanidesCePrNdPmSmEuGdTbDyHoErTmYbLuActinidesThPaUNpPuAmCmBkCfEsFmMdNoLr See also:...
Found on http://www.diracdelta.co.uk/science/source/h/a/halogen/source.html

halogen

group VIIA; group 18. An element of group VIIA (a. k. a. Group 18). The name means 'salt former'; halogens react with metals to form binary ionic compounds. Fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At) are known at this time.
Found on http://antoine.frostburg.edu/chem/senese/101/glossary/h.shtml

Halogen

The group VIIa elements in the periodic table.
Found on http://www.chemicalglossary.net/definition/860-Halogen

Halogen

Swimming pool chemistry: A member of the family of elements fluorine, bromine, chlorine and iodine.
Found on http://www.1st-direct.com/acatalog/Chemical_Glossary.html

halogen

Any of the elements of the halogen family, consisting of fluorine, chlorine, bromine, iodine, and astatine.
Found on http://www.encyclo.co.uk/local/20742

halogen

Highly reactive gases forming group 7 of the periodic table
Found on http://www.fisicx.com/quickreference/science/glossary.html

Halogen

Hal'o·gen (hăl'o*jĕn) noun [ Greek 'a`ls , 'alo`s , salt + -gen : confer French halogène .] (Chemistry) An electro-negative element or radical, which, by combination with a metal, forms a haloid salt; especially, chlorine, bromine, and iodine; so...
Found on http://www.encyclo.co.uk/webster/H/8

halogen

<chemistry> 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) ...
Found on http://www.encyclo.co.uk/local/20973

halogen

(hal´ә-jәn) (ha´lә-jәn) an element of group VII of the periodic table, the members of which form similar (saltlike) compounds in combination with sodium. The halogens are bromine, chlorine, fluorine, iodine, and astatine.
Found on http://www.encyclo.co.uk/local/21001

Halogen

• (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.
Found on http://thinkexist.com/dictionary/meaning/halogen/

halogen

halogen 1. Any of the five electronegative diatomic elements, fluorine, chlorine, iodine, bromine, or astatine; used to describe lamps or other light sources containing a filament heated by a halogen. So called because the elements readily form salts when combined with metals. 2. An element of a closely related chemical family, all of which form si...
Found on http://www.wordinfo.info/words/index/info/view_unit/2501/2

Halogen

This is the gas contained in the lamp of a Quartz Light, which prolongs the life of the tungsten filament. Quartz Lights are sometimes called Halogen Lights for this reason.
Found on What to say when you are done shooting, either for the day, at that particu

halogen

Any of the elements of the halogen family, consisting of fluorine, chlorine, bromine, iodine, and astatine
Found on http://www.encyclo.co.uk/local/21115

Halogen

Elements that attack carbon. Fluorine, bromine, chlorine, astatine and iodine.
Found on http://www.mcnallyinstitute.com/Charts/Glossary-html/Glossary_H.html

halogen

Any of a group of chemically related, nonmetallic elements that fall in group VII of the periodic table. The halogens are: • fluorine • chlorine • bromine • iodine • astatine The halogens are highly electronegative and react strongly with other elements and with organic co...
Found on http://www.daviddarling.info/encyclopedia/H/halogen.html

halogen

halogen (hăl'ujen) [Gr.,=salt-bearing], any of the chemically active elements found in Group 17 of the periodic table; the name applies especially to fluorine (symbol F), chlorine (Cl), bromine (Br), and iodine (I). Astatine (At), formerly known as alabamine, is a radioactive element also ...
Found on http://www.infoplease.com/ce6/sci/A0822476.html

Halogen

Halogen is a particular group of elements with similar bonding properties.
Found on http://www.probertencyclopaedia.com/browse/GH.HTM

halogen

Type: Term Pronunciation: hal′ō-jen Definitions: 1. One of the chlorine group (fluorine, chlorine, bromine, iodine, astatine) of elements; halogens form monobasic acids with hydrogen, and their hydroxides (fluorine forms none) are also monobasic acids.
Found on http://www.medilexicon.com/medicaldictionary.php?t=39142

halogen

Any of a group of five non-metallic elements with similar chemical bonding properties: fluorine, chlorine, bromine, iodine, and astatine. They form a linked group (Group 7) in the periodic table, descending from fluorine, the most reactive, to astatine, the least reactive. They all have coloured vapours and are poisonous. Melting points and...
Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0010020.html

halogen

(Gk: halos salt; gignomai to be born, become) any of the group of non-metallic elements, like fluorine, chlorine, bromine, iodine, which form halides by simple usnion with a metal (like sodium chloride salt).
Found on http://www.seafriends.org.nz/books/glossary.htm

Halogen

[disambiguation] The halogens are a series of chemical elements. Halogen may also refer to: ...
Found on http://en.wikipedia.org/wiki/Halogen_(disambiguation)

Halogen

The halogens or halogen elements (n) are a group in the periodic table consisting of five chemically related elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The artificially created element 117 (ununseptium) may also be a halogen. In the modern IUPAC nomenclature, this group is known as group 17. The group of ha...
Found on http://en.wikipedia.org/wiki/Halogen
No exact match found