verb, -lid⋅ed, -lid⋅ing.| 1. | to strike one another or one against the other with a forceful impact; come into violent contact; crash: The two cars collided with an ear-splitting crash. |
| 2. | to clash; conflict: Their views on the matter collided. |
| 3. | to cause to collide: drivers colliding their cars in a demolition derby. |
