Definition of convulsion noun from the Oxford Advanced American Dictionary

     

    convulsion

     noun
    noun
    NAmE//kənˈvʌlʃn//
     
    [usually plural]
     
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  1. 1a sudden shaking movement of the body that cannot be controlled The child went into convulsions.
  2. 2a sudden important change that happens to a country or an organization synonym upheaval political convulsions threatening the stability of new democracies
See the Oxford Advanced Learner's Dictionary entry: convulsion