Definition of erode verb from the Oxford Advanced American Dictionary

      

    erode

     verb
    verb
    NAmE//ɪˈroʊd//
     
    [often passive]Verb Forms present simple I / you / we / they erode
     
    he / she / it erodes
     
    past simple eroded
     
    -ing form eroding
     
     
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  1. 1 [transitive, intransitive] to gradually destroy the surface of something through the action of wind, rain, etc.; to be gradually destroyed in this way synonym wear away erode something (away) The cliff face has been steadily eroded by the ocean. erode (away) The rocks have eroded away over time.
  2. 2[transitive, intransitive] erode (something) to gradually destroy something or make it weaker over a period of time; to be destroyed or made weaker in this way Her confidence has been slowly eroded by repeated failures. Mortgage payments have been eroded (= decreased in value) by inflation.
See the Oxford Advanced Learner's Dictionary entry: erode