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1

laser

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noun, often attributive la·ser \ˈlā-zər\

Simple Definition of laser

  • : a device that produces a narrow and powerful beam of light that has many special uses in medicine, industry, etc.

Source: Merriam-Webster's Learner's Dictionary

Full Definition of laser

  1. 1 :  a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating a beam of coherent electromagnetic radiation usually in the ultraviolet, visible, or infrared regions of the spectrum

  2. 2 :  something resembling a laser beam in accuracy, speed, or intensity <threw a laser into the end zone> <a laser stare>

Examples of laser in a sentence

  1. doctors using a laser to perform delicate eye surgery



Origin and Etymology of laser

light amplification by stimulated emission of radiation


First Known Use: 1957


2

laser

verb la·ser

Definition of laser

  1. transitive verb
  2. :  to subject to the action of a laser

  3. :  treat with a laser



1978

First Known Use of laser

1978



LASER Defined for Kids

laser

play
noun la·ser \ˈlā-zər\

Definition of laser for Students

  1. :  a device that produces a very powerful beam of light




Medical Dictionary

1

laser

noun la·ser \ˈlā-zər\

Medical Definition of laser

  1. :  a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating coherent electromagnetic radiation usually in the ultraviolet, visible, or infrared regions of the spectrum




2

laser

transitive verb la·ser

Medical Definition of laser

  1. :  to subject to the action of a laser :  treat with a laser <cutting a corneal flap to remove tissue and then lasering the area under it—Jenny Manzer>




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