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1 definition found
 for yttrocolumbite
From The Collaborative International Dictionary of English v.0.48 :

  Yttro-columbite \Yt`tro-co*lum"bite\, Yttro-tantalite
  \Yt`tro-tan"ta*lite\, n. (Min.)
     A tantalate of uranium, yttrium, and calcium, of a brown or
     black color.
     [1913 Webster]

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