(physics) the condition of being collisional

plural of collision bulkhead

plural of collision mat

A course or path between two or more objects which, if continued at the current rate, will result in a collision.

In a collisionless way.

(physics) A high-energy nuclear reaction in which two nuclei overlap and exchange energy and nucleons

(transport) A collision where the front ends of two vehicles (such as ships, trains, cars, planes, etc.) hit each other, as opposed to a side-collision or rear-end collision.

(chemistry) Any theory that relates collisions among particles to reaction rate; reaction rate depends on such factors as concentration, surface area, temperature, stirring, and the presence of either a catalyst or an inhibitor.

(physics) Of or pertaining to collisions (especially between particles)

An instance of colliding. / (physics) Any event in which two or more bodies exert forces on each other in a relatively short time. In a collision, physical contact of two bodies is not necessary.