Look up: Halogen

1. 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.kcpc.usyd.edu.au/discovery/gl
   
   
2. Halogen
   A type of incandescent lamp with higher energy-efficiency that standard ones.
   Found on http://www.epa.gov/OCEPAterms/
   
   
3. 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/definitio
   
   
4. Halogen
   Halogen is a particular group of elements with similar bonding properties, consisting of flourine, chlorine, bromine and iodine.HHeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCoNiCuZnGaGeAsSeBrKrRbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXeCsBaLaHfTaWReOsIrPtAuHgTlPbBiPoAtRnFrRaAcLanthanidesCePrNdPmSmEuGdTbDyHoErTm...
   Found on http://www.diracdelta.co.uk/science/sour
   
   
5. 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
   
   
6. Halogen
   The group VIIa elements in the periodic table.
   Found on http://www.chemicalglossary.net/definiti
   
   
7. Halogen
   Swimming pool chemistry: A member of the family of elements fluorine, bromine, chlorine and iodine.
   Found on http://www.1st-direct.com/acatalog/Chemi
   
   
8. 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
   
   
9. halogen
   Highly reactive gases forming group 7 of the periodic table
   Found on http://www.fisicx.com/quickreference/sci
   
   
10. 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 s...
    Found on http://www.encyclo.co.uk/webster/H/8
    
    
11. 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.mondofacto.com/facts/dictiona
    
    
12. 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
    
    
13. 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
    
    
14. 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 clo...
    Found on http://www.wordinfo.info/words/index/inf
    
    
15. 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,
    
    
16. 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
    
    
17. Halogen
    Elements that attack carbon. Fluorine, bromine, chlorine, astatine and iodine.
    Found on http://www.mcnallyinstitute.com/Charts/G
    
    
18. 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/A08224
    
    
19. Halogen
    Halogen is a particular group of elements with similar bonding properties.
    Found on http://www.probertencyclopaedia.com/brow
    
    
20. 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/medicaldictio
    
    
21. 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/ency
    
    
22. 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/gloss
    
    
23. Halogen
    ! Group ! ! 17 ! Period ! 2 ! ! 3 ! ! 4 ! ! 5 ! ! 6 ! ! 7 The `halogens` or `halogen elements` are a series of nonmetal elements from Group 17 IUPAC Style (formerly: VII, VIIA) of the periodic table, comprising fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The artificiall...
    Found on http://en.wikipedia.org/wiki/Halogen
    
    
24. Halogen
    (band) `Halogen` is a five-piece band from Perth, Western Australia. Formed in 1998 by two expatriate New Zealanders - Jasmine Yee and Frans Bisschops. History: The band first gained national prominence in Australia through the song "Hole Around My Heart" from their Somewhere You...
    Found on http://en.wikipedia.org/wiki/Halogen