a course or path of a vehicle, projectile, etc., that, if unchanged, will lead to a collision with another object.
any plan, attitude, or course of action that leads to a confrontation or conflict with another.
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- colliquative necrosis,
- collision density,
- collision diameter,
- collision insurance,
- collision zone,
Origin of collision course
First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019