Main Entry:: ¹crys·tal
Pronunciation:: \ˈkris-t^əl\
Function:: noun
Etymology:: Middle English cristal, from Anglo-French, from Latin crystallum, from Greek krystallos — more at crust
Date:: 13th century

1: quartz that is transparent or nearly so and that is either colorless or only slightly tinged2: something resembling crystal in transparency and colorlessness3: a body that is formed by the solidification of a chemical element, a compound, or a mixture and has a regularly repeating internal arrangement of its atoms and often external plane faces4: a clear colorless glass of superior quality ; also : objects or ware of such glass5: the glass or transparent plastic cover over a watch or clock dialect6: a crystalline material used in electronics as a frequency-determining element or for rectification7: ice 7 ; broadly : methamphetamine in any form when used illicitly

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