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.
verb (used with object)
3.
to cause to collide: drivers colliding their cars in a demolition derby.
Origin: 1615–25; < Latincollīdere to strike together, equivalent to col-col-1 + -līdere, combining form of laedere to strike
1621, from L. collidere "strike together," from com- "together" + lædere "to strike, injure by striking," of unknown origin. For L. vowel change, see acquisition.