Word Study
cryptocrystalline
CIDE DICTIONARY
cryptocrystalline, a. [Gr. krypto`s hidden + E. crystalline.].
Indistinctly crystalline; -- applied to rocks and minerals, whose state of aggregation is so fine that no distinct particles are visible, even under the microscope. [1913 Webster]
OXFORD DICTIONARY
cryptocrystalline, adj. having a crystalline structure visible only when magnified.
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