Dictionary

maser

noun ma·ser \ˈmā-zər\

Definition of MASER

:  a device or object that emits coherent microwave radiation produced by the natural oscillations of atoms or molecules between energy levels
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Origin of MASER

microwave amplification by stimulated emission of radiation
First Known Use: 1955
Medical Dictionary

maser

noun ma·ser \ˈmā-zər\

Medical Definition of MASER

:  a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating electromagnetic radiation in the microwave region of the spectrum

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