/ Dictionary / Index C convulsion: Meaning and Definition of Find definitions for: con•vul•sion Pronunciation: (kun-vul'shun), [key] — n. contortion of the body caused by violent, involuntary muscular contractions of the extremities, trunk, and head. violent agitation or disturbance; commotion. an outburst of great, uncontrollable laughter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: convulsion (Thesaurus) convulse convulsionary Related Content Daily Word Quiz: quandary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language