Collision

Col*li"sion (?), n. [L. collisio, fr. collidere. See Collide.] 1. The act of striking together; a striking together, as of two hard bodies; a violent meeting, as of railroad trains; a clashing.

2. A state of opposition; antagonism; interference.

The collision of contrary false principles.
Bp. Warburton.

Sensitive to the most trifling collisions.
W. Irving.

Syn. -- Conflict; clashing; encounter; opposition.