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noun crystal pronunciation in British English /ˈkrɪst(ə)l/ 
Word Forms
  1. 1
    [countable] chemistry a piece of a substance that has a regular shape with many sides and is formed when the substance becomes solid

    ice/salt/sugar/snow crystals

  2. 2
    [countable/uncountable] a clear rock that looks like glass, especially quartz
    Synonyms and related words for this sense of crystal
    1. a.
      a piece of crystal used as a jewel

      a crystal necklace

      Synonyms and related words for this sense of crystal
  3. 3
    [uncountable] clear glass of very good quality

    a set of crystal wine glasses

    1. a.
      objects such as glasses and bowls made from crystal

      We should use the good crystal at dinner tonight.

  4. 4
    [countable] the piece of glass or plastic that protects the face of a clock or watch
    Synonyms and related words for this sense of crystal


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