Definition of convulse verb from the Oxford Advanced Learner's Dictionary

     

    convulse

     verb
    verb
    BrE BrE//kənˈvʌls//
     
    ; NAmE NAmE//kənˈvʌls//
     
    Verb Forms present simple I / you / we / they convulse
    BrE BrE//kənˈvʌls//
     
    ; NAmE NAmE//kənˈvʌls//
     
    he / she / it convulses
    BrE BrE//kənˈvʌlsɪz//
     
    ; NAmE NAmE//kənˈvʌlsɪz//
     
    past simple convulsed
    BrE BrE//kənˈvʌlst//
     
    ; NAmE NAmE//kənˈvʌlst//
     
    past participle convulsed
    BrE BrE//kənˈvʌlst//
     
    ; NAmE NAmE//kənˈvʌlst//
     
    -ing form convulsing
    BrE BrE//kənˈvʌlsɪŋ//
     
    ; NAmE NAmE//kənˈvʌlsɪŋ//
     
     
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  1. 1[transitive, intransitive] convulse (somebody) (with something) (rather formal) to cause a sudden shaking movement in somebody’s body; to make this movement A violent shiver convulsed him. His whole body convulsed.
  2. 2[transitive] be convulsed with laughter, anger, etc. to be laughing so much, so angry, etc. that you cannot control your movements She was convulsed by a bout of sneezing.
  3. Word Origin mid 17th cent.: from Latin convuls- ‘pulled violently, wrenched’, from the verb convellere, from con- ‘together’ + vellere ‘to pull’.
See the Oxford Advanced American Dictionary entry: convulse