First Known Use: 1955
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
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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