Definition of Laser in English :

Define Laser in English

Laser meaning in English

Meaning of Laser in English

Pronunciation of Laser in English

Laser pronunciation in English

Pronounce Laser in English

Laser

see synonyms of laser

Noun

1. laser, optical maser

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

WordNet Lexical Database for English. Princeton University. 2010.


Laser

see synonyms of laser
noun
1. 
a source of high-intensity optical, infrared, or ultraviolet radiation produced as a result of stimulated emission maintained within a solid, liquid, or gaseous medium. The photons involved in the emission process all have the same energy and phase so that the laser beam is monochromatic and coherent, allowing it to be brought to a fine focus
2. 
any similar source producing a beam of any electromagnetic radiation, such as infrared or microwave radiation
verb (transitive)
3. 
to use a laser on (something), esp as part of medical treatment
4. (often foll by off)
to remove (a tattoo, fat, etc) with laser treatment
noun
trademark
a type of dinghy, designed to be sailed by one person

Collins English Dictionary. Copyright © HarperCollins Publishers


Laser

see synonyms of laser
noun
a device containing a substance the majority of whose atoms or molecules can be put into an excited energy state, allowing the substance to emit coherent light of a precise wavelength in an intense, narrow beam

Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by Houghton Mifflin Harcourt. All rights reserved.


Laser

see synonyms of laser
n.
1.
a. Any of several devices that emit highly amplified and coherent radiation of one or more discrete wavelengths. One of the most common lasers makes use of atoms in a metastable energy state, which, as they decay to a lower energy level, stimulate others to decay, resulting in a cascade of emitted radiation.
b. A beam of radiation emitted by a laser.
2. Sports A ball or puck sent in a straight line at high speed: shot a laser into the upper right corner of the goal.

The American Heritage ® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.