1. Clear; transparent. 2. Relating to a crystal or crystals.
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crys·tal·line 'kris-tə-lənalso -.līn, -.lēn adj
1) composed of or resembling crystals
2 a) formed by crystallization: having regular arrangement of the atoms in a space lattice see AMORPHOUS (2)
b) having the internal structure though not necessarily the external form of a crystal <granite is only \crystalline, while quartz crystal is perfectly crystallized>
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crys·tal·line (krisґtə-lēn) 1. pertaining to crystals. 2. resembling a crystal in nature or clearness.Medical dictionary. 2011.