We found 15 dictionaries that define the word collision course:

General (12 matching dictionaries)

1. collision course: Merriam-Webster
2. collision course: American Heritage Dictionary of the English Language
3. collision course: Collins English Dictionary
4. collision course: Vocabulary.com
5. collision course: Wiktionary
6. collision course: Infoplease Dictionary
7. collision course: Dictionary.com
8. Collision Course (EP), Collision Course (Hinton novel), Collision Course (album), Collision Course, Collision course: Wikipedia, the Free Encyclopedia
9. collision course: Rhymezone
10. collision course: FreeDictionary.org
11. collision course: Mnemonic Dictionary
12. collision course: TheFreeDictionary.com

Computing (1 matching dictionary)

13. collision course: Encyclopedia

Slang (1 matching dictionary)

14. collision course: Urban Dictionary

Tech (1 matching dictionary)

15. SeaTalk Dictionary of English Nautical Language (No longer online)

(Note: See collision_courses as well.)

Definitions from Wiktionary (collision course) ▸ noun:  A course or path between two or more objects which, if continued at the current rate, will result in a collision. Similar: course, tracing, collider, race, crossing, trajectory, line, proportional navigation, alignment, racing line, more... Opposite: divergent course, separate trajectory Phrases: on collision course, on a collision course, more... ▸ Words similar to collision course ▸ Usage examples for collision course ▸ Idioms related to collision course ▸ Wikipedia articles (New!) ▸ Words that often appear near collision course ▸ Rhymes of collision course ▸ Invented words related to collision course