symbol - definition and synonyms

noun [countable] 

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  1. 1
    a picture or shape used to represent something
    symbol of:

    A crescent moon was the symbol of the old Ottoman Empire.

    1. a.
      a mark, letter, number etc used to represent something, for example in chemistry or music

      ‘Fe’ is the symbol for iron.

  2. 2
    someone or something that represents a particular idea or quality
    symbol of:

    Many Catholics saw him as a symbol of hope.