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Dictionary definition for: Convulsion
1. (n) a sudden uncontrollable attack; "a paroxysm of giggling" "a fit of coughing" "convulsions of laughter"
2. (n) violent uncontrollable contractions of muscles
3. (n) a violent disturbance; "the convulsions of the stock market"
4. (n) a physical disturbance such as an earthquake or upheaval
WordNet 2.1 Copyright Princeton University. All rights reserved.