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Definition of fossil noun from the Oxford Advanced American Dictionary

     

    fossil

     noun
    noun
    NAmE//ˈfɑsl//
     
     
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  1. 1the remains of an animal or a plant that have become hard and turned into rock fossils over two million years old
  2. 2(informal) (disapproving) an old person, especially one who is unable to accept new ideas or adapt to changes
See the Oxford Advanced Learner's Dictionary entry: fossil

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