| crystal | (noun) a protective cover that protects the face of a watch | Synonyms: watch crystal, watch glass |
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| (noun) glassware made of quartz | - |
| (noun) a crystalline element used as a component in various electronic devices | - |
| (noun) a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces | Synonyms: crystallization |
| (noun) a solid formed by the solidification of a chemical and having a highly regular atomic structure | - |
| (noun) colorless glass made of almost pure silica | Synonyms: lechatelierite, quartz, quartz glass, vitreous silica |
| crystallinity | (noun) (chemistry) The degree of structural order in a solid. | - |
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| crystallisation | (noun) the formation of crystals | Synonyms: crystallization, crystallizing |
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| crystallite | (noun) any of numerous minute rudimentary crystalline bodies of unknown composition found in glassy igneous rock | - |
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| crystallization | (noun) a mental synthesis that becomes fixed or concrete by a process resembling crystal formation | - |
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| (noun) a rock formed by the solidification of a substance; has regularly repeating internal structure; external plane faces | Synonyms: crystal |
| (noun) the formation of crystals | Synonyms: crystallisation, crystallizing |
| crystallizing | (noun) the formation of crystals | Synonyms: crystallisation, crystallization |
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| crystallogen | (noun) any chemical element that belongs to the carbon group. | Synonyms: carbon group element, Group 14 element, tetragen, tetrel |
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| crystallographer | (noun) a specialist in crystallography | - |
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| crystallography | (noun) the branch of science that studies the formation and structure of crystals | - |
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