a particle accelerator in which two separate beams of particles (usually of opposite charge) are circulated in opposite directions and directed so as to collide head on. This technique allows the production of collisions of higher energy than would be possible with a single beam produced by the same device.
a big device (typically a few km long) that accelerates particles and smashes them on each other (they collide)
a high-tech machine used to generate interesting bits of matter by smashing together other not-quite-as-interesting bits of matter at extremely high speeds
A type physics research machine that brings moving particles into collision with one another for the purpose of studying the outcome. As opposed to a fixed-target machine, which smashes moving particles into a stationary object.
An accelerator in which two beams travelling in opposite directions are steered together to provide high-energy collisions between the particles in one beam and those in the other.
A collider is a type of a particle accelerator with two opposite beams of the particles.