adj. 1. Being, relating to, or composed of crystal or crystals. 2. Resembling crystal, as in transparency or distinctness of structure or outline. See Synonyms at clear. [Middle English cristallin, from Old French, from Latin crystallinus, from Greek krustallinos, from krustallos, ice, crystal; see kreus- in the Appendix of Indo-European roots.] crys′tal·lini·ty (-lĭnĭ-tē) n. |
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