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 (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
    
    
11. 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
    
    
12. 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
    
    
13. 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