disthene

from The Collaborative International Dictionary of English v.0.48
Disthene \Dis"thene\, n. [Gr. di- = di`s- twice + ? force: cf.
   F. disth[`e]ne.] (Min.)
   Cyanite or kyanite; -- so called in allusion to its unequal
   hardness in two different directions. See {Cyanite}.
   [1913 Webster]
    

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