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cryptocrystalline |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Cryptocrystalline \Cryp`to*crys"tal*line\ (-kr?s"tal-l?n), a. [Gr. krypto`s hidden + E. crystalline.] (Geol.) Indistinctly crystalline; -- applied to rocks and minerals, whose state of aggregation is so fine that no distinct particles are visible, even under the microscope.