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| ma·ser [ máyzər ] (plural ma·sers) |
noun |
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| Definition: |
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1. device producing microwave beam: a device used in radar and radio astronomy to boost the strength of microwaves
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2. galactic radiation source: a galactic source of polarized microwave radiation
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| [Mid-20th century. Acronym < microwave amplification by stimulated emission of radiation] |
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