disthene
Dis"thene, n. Etym: [Gr. disthène.] (Min.) Defn: Cyanite or kyanite; -- so called in allusion to its unequal hardness in two different directions. See Cyanite.
Dis"thene, n. Etym: [Gr. disthène.] (Min.) Defn: Cyanite or kyanite; -- so called in allusion to its unequal hardness in two different directions. See Cyanite.