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nickel

noun
🔊/ˈnɪkl/
🔊/ˈnɪkl/
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  1. [uncountable]
    (symbol Ni)
    a chemical element. Nickel is a hard silver-white metal used in making some types of steel and other alloys.镍Topics Physics and chemistryc2
  2. [countable] a coin of the US and Canada worth 5 cents（美国和加拿大的）5 分镍币Topics Moneyc1
    3. Word Originmid 18th cent.: shortening of German Kupfernickel, the copper-coloured ore from which nickel was first obtained, from Kupfer ‘copper’ + Nickel ‘demon’ (with reference to the ore's failure to yield copper).