maser

A device that generates or amplifies electromagnetic radiation, especially microwaves, of a coherent wavelength by stimulated emission.

A natural object or region of space that acts like a maser, as a star-forming region of intersellar space.

An obsolete form of mazer.

Same as mazer.

An electronic device producing coherent monochromatic microwave radiation; it produces less noise than other forms of microwave oscillator.

Obsolete spelling of mazer.

a device for the coherent amplification or generation of electromagnetic radiation (especially of microwave frequency) by the use of excitation energy in resonant atomic or molecular systems

Any celestial object that generates microwaves using the same method

an acronym for microwave amplification by stimulated emission of radiation; an amplifier that works on the same principle as a laser and emits coherent microwave radiation