laser Definition

a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating a beam of coherent electromagnetic radiation usually in the ultraviolet, visible, or infrared regions of the spectrum; also : the beam of coherent radiation itself

something resembling a laser beam in accuracy, speed, or intensity

to subject to the action of a laser : treat with a laser

optical disk; especially : one containing a video recording (as of a motion picture)

a high-resolution printer for computer output that xerographically prints an image formed by a laser

the narrow beam of light produced by a laser

a laser that uses a chemical reaction (such as combustion) as an energy source

a laser that uses a noble-gas halide to generate radiation usually in the ultraviolet region of the spectrum

a laser that can be tuned over a wide range of frequencies and that produces electromagnetic radiation by the motion of electrons moving at relativistic velocities in a magnetic field