Definition of "collision course" []

• A course, as of moving objects or opposing philosophies, that will end in a collision or conflict if left unchanged: two planes on a collision course; dissidents on a collision course with the regime. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Tlaimon Kassant was drinking jiksn and spilled it when he discovered Friend on a collision course with Intar Hard Crash."
• "The day after the test, I hop back on the steroid train, on a collision course with destinyon a collision course with myself."
• "When Friend was discovered by Tlaimon Kassant to be on a collision course with the planet, the Intarians tried to communicate with it, then opened fire, neither of which did any good."