Definitions for LASERˈleɪ zər

This page provides all possible meanings and translations of the word LASER

Random House Webster's College Dictionary

la•serˈleɪ zər(n.)

  1. a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms and causing them to radiate their energy in phase.

    Category: Physics

    Ref: Compare maser.

Origin of laser:

1955–60; l(ightwave) a(mplification by) s(timulated) e(mission of) r(adiation)

Princeton's WordNet

  1. laser, optical maser(noun)

    an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light

Kernerman English Learner's Dictionary

  1. laser(noun)ˈleɪ zər

    a strong beam of light used in medicine and industry, or the machine that produces this

    laser treatment to correct eye defects

Freebase

  1. Laser

    A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation. Lasers differ from other sources of light because they emit light coherently. Its spatial coherence allows a laser to be focused to a tight spot, and this enables applications like laser cutting and laser lithography. Its spatial coherence also keeps a laser beam collimated over long distances, and this enables laser pointers to work. Laser also have high temporal coherence which allows them to have a very narrow spectrum, i.e., they only emit a single color of light. Their temporal coherence also allows them to emit pulses of light that only last a femtosecond. Lasers have many important applications. They are used in common consumer devices such as DVD players, laser printers, and barcode scanners. They are used in medicine for laser surgery and various skin treatments, and in industry for cutting and welding materials. They are used in military and law enforcement devices for marking targets and measuring range and speed. Laser lighting displays use laser light as an entertainment medium. Lasers also have many important applications in scientific research.

British National Corpus

  1. Nouns Frequency

    Rank popularity for the word 'LASER' in Nouns Frequency: #2593


Translations for LASER

Kernerman English Multilingual Dictionary

laser(noun)

(an instrument that produces) a narrow and very intense beam of light

The men were cutting the sheets of metal with a laser; (also adjective) a laser beam.

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