Definition of “crystal” - English Dictionary

“crystal” in British English

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uk /ˈkrɪs.təl/ us /ˈkrɪs.təl/

(Definition of “crystal” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“crystal” in American English

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us /ˈkrɪs·təl/

crystal noun (ROCK)

[ C/U ] transparent rock that looks like ice, or a piece of it

crystal noun (GLASS)

[ C/U ] transparent glass of high quality, usually with its surface cut into patterns that reflect light

[ C/U ] A crystal is a transparent glass or plastic cover for a watch or clock.

crystal noun (REGULAR SHAPE)

science [ C ] the solid state of many simple substances, which have a regular shape and surfaces arranged in similar patterns

(Definition of “crystal” from the Cambridge Academic Content Dictionary © Cambridge University Press)