con·vul·sion /kənˈvʌlʃən/ n. 1. [常作 convulsions] 惊厥，抽搐 an epileptic convulsion 癫痫性惊厥 2. [常作 convulsions] 狂笑，大笑；(感情等的)突然发作 The story was so funny that we were all in convulsions. 那故事真滑稽，逗得我们捧腹大笑。 a convulsion of grief and anger 悲愤交集 convulsions of sobbing 痛哭 3. 震动；大骚动，动乱；(地震等)灾变 a political convulsion 政治动乱