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[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
late Middle English
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
collisional, adjective
anticollision, adjective
Can be confused
collision, collusion. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for collision
Contemporary Examples
Historical Examples
  • "I hope there will be no collision between Rita and Mrs. Yeoman," laughed Dick.

    Fast as the Wind Nat Gould
  • The only thing we had to fear while we were lying-to in this manner was a collision with some other vessel.

    Up the River Oliver Optic
  • Waves of all sizes impinge upon them, and at every collision a portion of the impinging wave is struck off.

    Six Lectures on Light John Tyndall
  • He could not understand why the steamer piled up so quickly after the collision.

    Blow The Man Down Holman Day
  • The steersman whirled his wheel swiftly in the apparent endeavor to avert a collision.

    Jim Spurling, Fisherman Albert Walter Tolman
British Dictionary definitions for collision


a violent impact of moving objects; crash
the conflict of opposed ideas, wishes, attitudes, etc: a 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
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
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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
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collision in Technology

1. When two hosts transmit on a network at once causing their packets to corrupt each other.
See collision detection.
2. hash collision.

The Free On-line Dictionary of Computing, © Denis Howe 2010
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