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  Word: Corundum

  ID	Word	Wordtype	Definition
  34530	Corundum	n.	The earth alumina, as found native in a crystalline state, including sapphire, which is the fine blue variety; the oriental ruby, or red sapphire; the oriental amethyst, or purple sapphire; and adamantine spar, the hair-brown variety. It is the hardest substance found native, next to the diamond.

  
  

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