chro·mi·um /ˈkromiəm/
 鉻


 chro·mi·um /ˈkromɪəm/ 名詞



 Chro·mi·um n.  Chem. A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5.  Symbol Cr.  When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also chrome.

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 chromium
      n : a hard brittle blue-white multivalent metallic element;
          resistant to corrosion and tarnishing [syn: Cr, {atomic
          number 24]


 chromium
 Symbol: Cr
 Atomic number: 24
 Atomic weight: 51.996
 Hard silvery transition element. Used in decorative electroplating.
 Discovered in 1797 by Vauquelin.