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单词 blue iron
释义

Definition of blue iron in English:

blue iron

noun
rare
  • (Also "blue iron ore") an iron-containing ore or mineral of a blue colour; especially (also "blue iron earth") = "vivianite".

Origin

Mid 18th century; earliest use found in Thomas Birch (1705–1766), compiler of histories and biographer.

 
 

Definition of blue iron in US English:

blue iron

noun
rare
  • (Also "blue iron ore") an iron-containing ore or mineral of a blue colour; especially (also "blue iron earth") = "vivianite".

Origin

Mid 18th century; earliest use found in Thomas Birch (1705–1766), compiler of histories and biographer.

 
 
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