Look up: Ruthenium

1. ruthenium
   [n] - a rare polyvalent metallic element of the platinum group
   Found on http://www.webdictionary.co.uk/definitio
   
   
2. Ruthenium
   Ruthenium is a rare member of the platinum group of metals. It is a lustrous, silvery coloured metal which is unaffected by air, water and acids, but is soluble in fused alkalis. Extraction of the metal is achieved by several techniques; for example, extraction of the mixed platinum group metals by ...
   Found on http://www.diracdelta.co.uk/science/sour
   
   
3. Ruthenium
   a brittle, hard, grey metal; it has a high resistance to corrosion; it is unattacked by aqua regia, but slowly attacked by solutions of sodium hypochlorite Category: Chemistry • chemical element: atomic number 44 Category: Chemistry
   Found on http://www.mijnwoordenboek.nl/definition
   
   
4. Ruthenium
   Ru·the'ni·um noun [ New Latin So named from the Ruthenians , a Little Russian people, as coming from Russia, the metal having been found in the Ural mountains.] (Chemistry) A rare element of the light platinum group, found associated with p...
   Found on http://www.encyclo.co.uk/webster/R/107
   
   
5. ruthenium
   <chemistry, element> A rare element of the light platinum group, found associated with platinum ores, and isolated as a hard, brittle steel-gray metal which is very infusible. Specific gravity 12.26. See Platinum metals, under Platinum. ... Atomic weight: 103.5 ... Abbreviation: Ru ... Origin:...
   Found on http://www.mondofacto.com/facts/dictiona
   
   
6. ruthenium
   Ru noun a rare polyvalent metallic element of the platinum group; it is found associated with platinum
   Found on http://wordnetweb.princeton.edu/perl/web
   
   
7. ruthenium
   (Ru) (roo-the´ne-әm) a chemical element, atomic number 44, atomic weight 101.07.
   Found on http://www.encyclo.co.uk/local/21001
   
   
8. Ruthenium
   • (n.) A rare element of the light platinum group, found associated with platinum ores, and isolated as a hard, brittle steel-gray metal which is very infusible. Symbol Ru. Atomic weight 103.5. Specific gravity 12.26. See Platinum metals, under Platinum.
   Found on http://thinkexist.com/dictionary/meaning
   
   
9. ruthenium
   (Ru), chemical element, one of the platinum metals of Group VIII of the periodic table, used as an alloying agent to harden platinum and palladium. ... [5 related articles]
   Found on http://www.britannica.com/eb/a-z/r/81
   
   
10. Ruthenium
    Ruthenium (m {respell|roo|THEE|nee-əm}) is a chemical element with symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the other metals of the platinum group, ruthenium is inert to most chemicals. The Russian scientist Karl Erns...
    Found on http://en.wikipedia.org/wiki/Ruthenium
    
    
11. ruthenium
    (Ru) A silvery-white, metallic element belonging to the platinum group of transition elements. Ruthenium was first discovered by Jedrzej A. Sniadecki in Vilno, Poland, in 1808, and then rediscovered By G. W. Osann in Tartu, Russia, in 1828; its name comes from Ruthenia, the Lati...
    Found on http://www.daviddarling.info/encyclopedi
    
    
12. ruthenium
    ruthenium (rOOthē'nēum) , metallic chemical element; symbol Ru; at. no. 44; at. wt. 101.07; m.p. about 2,310°C; b.p. about 3,900°C; sp. gr. 12.41 at 20°C; valence commonly +2, +3, +4, +6, or +8. Ruthenium is a hard, lustrous, silver-gray metal with a close-packed hexagona...
    Found on http://www.infoplease.com/ce6/sci/A08427
    
    
13. Ruthenium
    Ruthenium is a metal element of the platinum group of elements, occurring in the Urals and Americas. It is a hard, brittle, grey metal that forms ruthenious and ruthenic salts, of a reddish brown colour, of which ruthenious chloride gives a characteristic fine black precipitate with water.
    Found on http://www.probertencyclopaedia.com/brow
    
    
14. ruthenium
    (Ru) Type: Term Pronunciation: rū-thē′nē-ŭm Definitions: 1. A metallic element of the platinum group; atomic no. 44, atomic wt. 101.07; 106Ru, with a half-life of 1.020 years, has been used in the treatment of certain eye problems.
    Found on http://www.medilexicon.com/medicaldictio
    
    
15. ruthenium
    Hard, brittle, silver-white, metallic element, atomic number 44, relative atomic mass 101.07. It is one of the so-called platinum group of metals; it occurs in platinum ores as a free metal and in the natural alloy osmiridium. It is used as a hardener in alloys and as a catalyst; its compounds are used as colouring agents in glass a...
    Found on http://www.talktalk.co.uk/reference/ency