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Convulsion

kənˈvʌlʃn

Convulsion definitions
noun
convulsion convulsions
  1. a sudden, violent, irregular movement of the body, caused by involuntary contraction of muscles and associated especially with brain disorders such as epilepsy, the presence of certain toxins or other agents in the blood, or fever in children

    "toxic side effects like convulsions"

    fit seizure paroxysm spasm attack muscular contractions
    • uncontrollable laughter

      "the audience collapsed in convulsions"

    • an earthquake or other violent or major movement of the earth's crust

      "the violent convulsions of tectonic plates"

  2. a violent social or political upheaval

    "the convulsions of 1939–45"