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Webster 1913 Edition


Cryptocrystalline

Crypˊto-crys′tal-line

(-kr?s′tal-l?n)
,
Adj.
[Gr.
κρυπτόσ
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.