[ 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.

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 forms

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

Can be confused

collision collusion Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for anticollision

  • They had come close enough to each other to activate their anticollision safeties.

    The Cosmic Computer|Henry Beam Piper

British Dictionary definitions for anticollision


/ (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