/ Dictionary / Index C collision: Meaning and Definition of Find definitions for: col•li•sion Pronunciation: (ku-lizh'un), [key] — n. the act of colliding; a coming violently into contact; crash: the collision of two airplanes. a clash; conflict: a collision of purposes. the meeting of particles or of bodies in which each exerts a force upon the other, causing the exchange of energy or momentum. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: collision (Thesaurus) Collinsville collision course Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language