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collision

col·li·sion [ kə lí'n ] (plural col·li·sions)


noun 
Definition:
 
1. crash: the action of two moving vehicles, ships, aircraft, or other objects hitting each other

2. automobile insurance coverage: automobile insurance that covers damages done to the insured's motor vehicle in the event that it collides with another vehicle or with some other object

3. conflict between ideas: a conflict between people or their ideas or beliefs

4. physics exchange of energy between particles: an encounter between two or more particles that come together or close to each other, and exchange or transfer energy

[15th century. < late Latin collision-< Latin collis-, past participle of collidere (see collide)]

col·li·sion·al adjective
col·li·sion·al·ly adverb
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