convulsion meaning and definition

CONVULSION noun

Definition of convulsion (noun)

1. a sudden uncontrollable attack
   • "a paroxysm of giggling"; "a fit of coughing"; "convulsions of laughter"
   • synonyms: fit, paroxysm
2. violent uncontrollable contractions of muscles
3. a violent disturbance
   • "the convulsions of the stock market"
   • synonyms: turmoil, upheaval
4. a physical disturbance such as an earthquake or upheaval