collision

noun

col·​li·​sion kə-ˈli-zhən How to pronounce collision (audio)
Synonyms of collisionnext
1
: an act or instance of colliding : clash
2
: an encounter between particles (such as atoms or molecules) resulting in exchange or transformation of energy
collisional adjective
collisionally adverb
Choose the Right Synonym for collision

impact, collision, shock, concussion mean a forceful, even violent contact between two or more things.

impact may be used to imply contact between two things, at least one of which is impelled toward the other.

the glass shattered on impact with the floor

collision implies the coming together of two or more things with such force that both or all are damaged or their progress is severely impeded.

the collision damaged the vehicle

shock often denotes the effect produced by a collision and carries the suggestion of something that strikes or hits with force.

the shock of falling rocks

concussion when not in technical use, often suggests the shattering, disrupting, or weakening effects of a collision, explosion, or blow.

bystanders felt the concussion of the blast

Examples of collision in a Sentence

The car was destroyed in the collision. the collision of two opposing philosophies regarding the rearing of children
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This maneuver required immense torque and real-time motion control to avoid collisions. Aamir Khollam, Interesting Engineering, 17 Feb. 2026 In early 2025, Isom also had to navigate the tragedy of Flight 5342 — the devastating midair collision at Reagan National caused by a wayward military helicopter, through no fault of American’s. Jeffrey Sonnenfeld, Fortune, 16 Feb. 2026 This is the second fatal traffic collision in Hayward this year, police said. Hema Sivanandam, Mercury News, 16 Feb. 2026 Expect significant delays on HWY 71 in both directions near Bob Wire Rd due to a serious multi-vehicle collision. Dante Motley, Austin American Statesman, 16 Feb. 2026 See All Example Sentences for collision

Word History

Etymology

Middle English, from Latin collision-, collisio, from collidere

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of collision was in the 15th century

Browse Nearby Words

Cite this Entry

“Collision.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/collision. Accessed 18 Feb. 2026.

Kids Definition

collision

noun
col·​li·​sion kə-ˈlizh-ən How to pronounce collision (audio)
: an act or instance of colliding

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