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Definition of erosion noun from the Oxford Advanced American Dictionary

      

    erosion

     noun
    noun
    NAmE//ɪˈroʊʒn//
     
    [uncountable]
     
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  1. 1the process by which the surface of something is gradually destroyed through the action of wind, rain, etc. the erosion of the coastline by the ocean soil erosion
  2. 2the process of gradually destroying something or making it weaker over a period of time the erosion of her confidence
See erosion in the Oxford Advanced Learner's Dictionary
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