1. A sudden uncontrollable attack
   "convulsions of laughter"
   - paroxysm, fit 
2. Violent uncontrollable contractions of muscles 
3. A violent disturbance
   "the convulsions of the stock market"
   - turmoil, upheaval 
4. A physical disturbance such as an earthquake or upheaval

Derived forms: convulsions

See also: convulse

Type of: attack, commotion, disruption, disturbance, flutter, hoo-ha, hoo-hah, hurly burly, ictus, kerfuffle, raptus, seizure, to-do, trouble

Encyclopedia: Convulsion

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