[ kuh-lizh-uh n ]
/ kəˈlɪʒ ən /


the act of colliding; a coming violently into contact; crash: the collision of two airplanes.
a clash; conflict: a collision of purposes.
Physics. the meeting of particles or of bodies in which each exerts a force upon the other, causing the exchange of energy or momentum.

Nearby words

  1. collinsville,
  2. collip,
  3. colliquation,
  4. colliquative,
  5. colliquative necrosis,
  6. collision course,
  7. collision density,
  8. collision diameter,
  9. collision insurance,
  10. collision zone

Origin of collision

1400–50; late Middle English < Late Latin collīsiōn- (stem of collīsiō), equivalent to collīs(us) (past participle of collīdere to collide) + -iōn- -ion

Related formscol·li·sion·al, adjectivean·ti·col·li·sion, adjective

Can be confusedcollision collusion Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for collision

British Dictionary definitions for collision


/ (kəˈlɪʒən) /


a violent impact of moving objects; crash
the conflict of opposed ideas, wishes, attitudes, etca collision of interests
physics an event in which two or more bodies or particles come together with a resulting change of direction and, normally, energy

Word Origin for collision

C15: from Late Latin collīsiō from Latin collīdere to collide

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for collision



early 15c., from Middle French collision (15c.), from Latin collisionem (nominative collisio) "a dashing together," noun of action from collidere (see collide).

Online Etymology Dictionary, © 2010 Douglas Harper