col·li·sion
kə-ˈli-zhən 
2
: an encounter between particles (such as atoms or molecules) resulting in exchange or transformation of energy
collisionally
adverb
col·li·sion·al
kə-ˈlizh-nəl
-ˈli-zhə-nᵊl
: marked by or ensuing from a collision
collisionally
adverb
The Kuiper Belt is … collisionally evolving, meaning that the region's icy content has been modified over the past 4.5 billion years, since the solar system was born.
—
Space.com, 29 Dec. 2009
Space.com, 29 Dec. 2009
Examples of collision in a Sentence
Noun
The car was destroyed in the collision.
the collision of two opposing philosophies regarding the rearing of children
Recent Examples on the Web
Anthony Thompson, USA Today, 14 June 2026
In the video recorded at the Elliot Key Marina shortly after the collision, Pino can be seen telling the investigator that his attention was split immediately before the accident.
—Ana Maria Soler, CBS News, 13 June 2026
The current number of near-collisions is tough to pin down, as FAA data on drone-aircraft encounters is limited and difficult to verify.
—Katie Nadworny, Travel + Leisure, 12 June 2026
Bigger spacecraft make bigger collision targets, and more elaborate cooling systems offer yet more ways to fail.
—Chris Stokel-Walker, Scientific American, 12 June 2026
See All Example Sentences for collision
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Noun
Investigators said Morabia Siddhi Suresh, 33, of Fremont, California, had been driving in rainy conditions when she was involved in a separate collision, according to Kentucky State Police.
—Anthony Thompson, USA Today, 14 June 2026
In the video recorded at the Elliot Key Marina shortly after the collision, Pino can be seen telling the investigator that his attention was split immediately before the accident.
—Ana Maria Soler, CBS News, 13 June 2026
The current number of near-collisions is tough to pin down, as FAA data on drone-aircraft encounters is limited and difficult to verify.
—Katie Nadworny, Travel + Leisure, 12 June 2026
Bigger spacecraft make bigger collision targets, and more elaborate cooling systems offer yet more ways to fail.
—Chris Stokel-Walker, Scientific American, 12 June 2026
See All Example Sentences for collision
Cite this Entry
“Collision.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/collision. Accessed 16 Jun. 2026.
Copy CitationKids Definition
collision
noun
col·li·sion
kə-ˈlizh-ən
: an act or instance of colliding
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