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5 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 ru·the·ni·um /ruˈθiniəm/
 釕

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 ru·the·ni·um /ruˈθɪnɪəm/ 名詞
 釕

From: Webster's Revised Unabridged Dictionary (1913)

 Ru·the·ni·um n.  Chem. 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.
 ◄ ►

From: WordNet (r) 2.0

 ruthenium
      n : a rare polyvalent metallic element of the platinum group; it
          is found associated with platinum [syn: Ru, atomic
           number 44]

From: Elements database 20001107

 ruthenium
 Symbol: Ru
 Atomic number: 44
 Atomic weight: 101.07
 Hard white metallic transition element. Found with platinum, used as a
 catalyst in some platinum alloys. Dissolves in fused alkalis, and is not
 attacked by acids. Reacts with halogens and oxygen at high temperatures.
 Isolated in 1844 by K.K. Klaus.