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Definition of laser noun from the Oxford Advanced Learner's Dictionary

laser

noun
 
/ˈleɪzə(r)/
 
/ˈleɪzər/
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  1. a device that gives out light in which all the waves oscillate (= change direction and strength) together, typically producing a powerful beam of light that can be used for cutting metal, in medical operations, etc.
    • a laser beam
    • a laser navigation device
    • The barcodes on the products are read by lasers.
    • a laser show (= lasers used as entertainment)
    • She's had laser surgery on her eye.
    • laser treatment/therapy
    Topics Physics and chemistryc1
    Oxford Collocations Dictionaryadjective
    • powerful
    • infrared
    verb + laser
    • use
    • aim
    • fire
    laser + noun
    • beam
    • blast
    • light
    See full entry
    Word Origin1960s: acronym from light amplification by stimulated emission of radiation, on the pattern of maser.
See laser in the Oxford Advanced American DictionarySee laser in the Oxford Learner's Dictionary of Academic English
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