Violent uncontrollable contraction of the voluntary muscles.
                                                            
                                                     
                        
                                                
                        
                        
                            An abnormal violent and involuntary contraction or series of contractions of the voluntary muscles.
                                                            
                                                     
                        
                                                
                        
                        
                            a sudden uncontrollable attack; "a paroxysm of giggling"; "a fit of coughing"; "convulsions of laughter" 
                                                            
                                                     
                        
                                                
                        
                        
                            violent uncontrollable contractions of muscles 
                                                            
                                                     
                        
                                                
                        
                        
                            a violent disturbance; "the convulsions of the stock market" 
                                                            
                                                     
                        
                                                
                        
                        
                            a physical disturbance such as an earthquake or upheaval 
                                                            
                                                     
                        
                                                
                        
                        
                            a sudden, violent, involuntary contraction of the muscles of the body, often accompanied by loss of consciousness
                                                            
                                                     
                        
                                                
                        
                        
                            A sudden attack usually accompanies by a loss of consciousness and rhythmic contractions of some or all voluntary muscles. See also epilepsy.
                                                            
                                                     
                        
                                                
                        
                        
                            Involuntary muscle contractions and relaxation.
                                                            
                                                     
                        
                                                
                        
                        
                            involuntary muscle contractions common in generalized tonic-clonic seizures.
                                                            
                                                     
                        
                                                
                        
                        
                            An abnormal, uncontrollably violent involuntary contraction or series of contractions of the muscles; spasm or series of jerkings of the face, trunk, or limbs.
                                                            
                                                     
                        
                                                
                        
                        
                            A strong spasm or series of twitches of the face, body, arms or legs.
                                                            
                                                     
                        
                                                
                        
                        
                            A violent, involuntary muscular contraction.
                                                            
                                                     
                        
                                                
                        
                        
                            severe, involuntary muscle spasm, usually with loss of consciousness.
                                                            
                                                     
                        
                                                
                        
                        
                            A series of spasm-like contractions of muscles.
                                                            
                                                     
                        
                                                
                        
                        
                            intense, uncontrollable contraction of muscles