(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.

(physics) the interaction between two moving electric charges at close range

(nautical) A strong, watertight transverse bulkhead in the fore part of a ship to prevent water flowing aft in the event of a collision

(nautical) A large square of canvas, treated with a sealing agent and attached to lines at each corner; hauled over a damaged part of the hull to limit the inflow of water

(software compilation) An error caused by two source code elements (such as variables or functions) having the same name as each other.

plural of collision course

(computing) The situation where two or more inputs to a hash function produce identical output.

plural of collision detection

(computing, chiefly video games) The process or mechanism of determining whether two shapes are partially occupying the same space.

plural of collision mat