Crashed into something with force, or came into conflict or disagreement with someone or their ideas.
From Latin 'collidere' (col- 'together' + laedere 'to strike'). Entered Middle English via Old French, maintaining both the physical and figurative senses of 'striking together.'
The word 'collide' comes from the same root as 'lesion' (injury)—both trace back to Latin 'laedere' meaning 'to harm,' so a collision literally means two things came together and caused harm.
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