10. 
    helium
    <element> A gas. Certain types of radiation therapy used charged, radioactive particles of helium. ... (16 Dec 1997) ...
    Found op http://www.mondofacto.com/facts/dictionary?helium
    
    
11. 
    helium
    (He) (he´le-әm) a chemical element, atomic number 2, atomic weight 4.003. It is a chemically inert element that is odorless, tasteless, and noncombustible.
    Found op http://www.encyclo.co.uk/local/21001
    
    
12. 
    Helium
    • (n.) A gaseous element found in the atmospheres of the sun and earth and in some rare minerals. • (n.) An inert, monoatomic, gaseous element occurring in the atmosphere of the sun and stars, and in small quantities in the earth`s atmosphere, in several minerals and in certain mineral wat...
    Found op http://thinkexist.com/dictionary/meaning/helium/
    
    
13. 
    Helium
    (from the article `Keesom, Willem Hendrik`) ...joined the faculty of the Utrecht veterinary school. Six years later he returned to Leiden as professor of experimental physics. At the Onnes ...
    Found op http://www.britannica.com/eb/a-z/h/33
    
    
14. 
    helium
    chemical element, inert gas of Group 0 (noble gases) of the periodic table. The second lightest element (only hydrogen is lighter), helium is a ... [53 related articles]
    Found op http://www.britannica.com/eb/a-z/h/33
    
    
15. 
    helium
    (He) Type: Term Pronunciation: hē′lē-ŭm Definitions: 1. A gaseous element present in minute amounts in the atmosphere (0.000524% of dry volume); atomic no. 2, atomic wt. 4.002602; used as a diluent of medicinal gases; used as a diluent of oxygen principally in nonmedical ...
    Found op http://www.medilexicon.com/medicaldictionary.php?t=39654
    
    
16. 
    Helium
    [band] Helium was an American alternative rock band formed in the summer of 1992. Originally calling themselves "Chupa", its founding members were Mary Lou Lord, Jason Hatfield (Juliana`s brother), Shawn King Devlin (drums) and Brian Dunton (electric bass guitar). Devlin and Dunton were both...
    Found op http://en.wikipedia.org/wiki/Helium_(band)
    
    
17. 
    Helium
    Helium (m {respell|HEE|lee-əm}) is the chemical element with atomic number 2 and an atomic weight of 4.002602, which is represented by the symbol He. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table. Its boiling and meltin...
    Found op http://en.wikipedia.org/wiki/Helium
    
    
18. 
    helium
    (He) A prototype Venus balloon in a JPL cleanroom. Image credit: NASA/JPL-Caltech A colorless, odorless, unreactive gaseous element which is the second most abundant and second lightest element in the universe (after hydrogen). Helium is one of the inert gases (also k...
    Found op http://www.daviddarling.info/encyclopedia/H/helium.html
    
    
19. 
    helium
    helium (hē'lēum) , gaseous chemical element; symbol He; at. no. 2; at. wt. 4.0026; m.p. below -272°C at 26 atmospheres pressure; b.p. -268.934°C at 1 atmosphere pressure; density 0.1785 grams per liter at STP; valence usually 0.Spectroscopic evidence for the presence of heliu...
    Found op http://www.infoplease.com/ce6/sci/A0823261.html
    
    
20. 
    Helium
    Helium is a gaseous element of the noble gas group with the symbol He.
    Found op http://www.probertencyclopaedia.com/browse/GH.HTM
    
    
21. 
    helium
    Colourless, odourless, gaseous, non-metallic element, atomic number 2, relative atomic mass 4.0026. It is grouped with the noble gases (rare gases) in Group 0 of the periodic table. Helium is nonreactive because of its full outer shell of electrons and forms no compounds. It is the second most abund...
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0016381.html
    
    
22. 
    helium
    a gas that's lighter-than-air.
    Found op http://www.kidseclipse.com/pages/glossary.htm
    
    

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