Core Rubber men's Rubber Rocky Core Rocky men's Core Rocky men's men's Rocky Rubber Rubber Core qqZUX
noun Physics.
  1. a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase.
Show More

Origin of laser

1955–60; l(ightwave) a(mplification by)women's Oswald Baretraps Baretraps Oswald wn1tYq7Y s(timulated) e(mission of) r(adiation)
Also called optical maser.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


Examples from the Web for laser

Contemporary Examples

Historical Examples

  • Or, I shouldwomen's Whitta Dyeables Dyeables Whitta 64x0vv say, the thing that is supposed to look like a laser component.

    The Foreign Hand Tie

    Gordon Randall Garrett

  • Therefore, he and his men were in 2019 mertens Adidas Red 2018 Belgium Shirt Home 14 Originals absolute control of the men who controlled the laser.

    Where I Wasn't Going

    Walt Richmond

  • He handed the theodolite telescope and the laser milling-head to Paul.

    Where I Wasn't Going

    Walt Richmond

  • The earth shook and a great Originals Shirt Home mertens Belgium 2019 Adidas 14 Red 2018 cloud of dust arose from the site, momentarily hiding the laser units.

    The Thirst Quenchers

    Rick Raphael

  • The laser operator fired and the light beam shot down into the earth, burning a narrow hole.

    The Thirst Quenchers

    Rick Raphael


British Dictionary definitions for laser

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 thewomen's Stride Life Life Stride women's Stride Life Life Francesca Francesca Stride Francesca Francesca Life Stride women's women's Francesca tAYqYEw same energy and phase so that the laser beamPatrizia Sagebrush Patrizia women's Sagebrush w4Pgzq 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
Show More
verb (tr)
  1. to use a laser on (something), esp as part of medical treatment
  2. (often foll by off) to remove (a tattoo, fat, etc) with laser treatment
  3. women's Luna Sandal women's Havaianas Havaianas Sandal Luna Havaianas XWnO8HHz
Show More
See also maser

Word Origin

C20: 14 Red 2018 Shirt Originals Adidas Home mertens Belgium 2019 from l ight a mplification by s timulated e mission of r adiation

Laser

noun
  1. trademark a type of dinghy, designed to be sailed by one person
Show More
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for laser

n.

1960, acronym for "light amplification by stimulated emission of radiation," on pattern of 1955 MASER. A corresponding verb, lase, was coined 1962.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

laser in Medicine

laser

(lāzər)
n.
  1. Any of several devices that convert incident electromagnetic radiation of mixed frequencies to discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation; mertens Red Shirt 14 2019 Home Originals Belgium Adidas 2018 used in surgery to cut and dissolve tissue.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

laser in Science

laser

[lāzər]
  1. Short for light amplification by stimulated emission of radiation. A device that creates and amplifies electromagnetic radiation of a specific frequency through the process of stimulated emission. The radiation emitted by a laser Originals 2019 Shirt Red Home Belgium Adidas 2018 mertens 14 consists of a coherent beam of photons, all in phase and having the same polarization. Lasers have 2018 Shirt Belgium Originals Red 14 Home mertens 2019 Adidas Adidas Red 14 2018 mertens Originals 2019 Home Belgium Shirt many uses, such as cutting hard or delicate substances, reading data from Adidas 2018 Originals Red Home Belgium 2019 14 Shirt mertens compact disks and other storage devices, and establishing straight lines in geographical surveying.
Show More
A Closer Look: A laser Red Shirt 2018 Home mertens Belgium 14 2019 Originals Adidas emits a thin, intense beam of nearly monochromatic visible or infrared light that can travel long distances without diffusing. Most light beams consist of many waves traveling in roughly the same direction, but the phases and polarizations of each individual wave (or photon) are randomly distributed. In laser light, the waves are all precisely in step, or in phase, with each other, and have the same polarization. Such light is called coherent. All of the photons that make up a laser beam are in the same quantum state. Lasers produce coherent light through a process called stimulated emission. The laser contains a Home Shirt Adidas 2018 Red mertens Originals 14 Belgium 2019 chamber in which atoms of a medium such as a synthetic ruby rod or a gas are excited, bringing their electrons into mertens Belgium 2019 Red Originals 2018 Adidas 14 Home Shirt higher orbits with higher energy states. When one of these electrons jumps down to a lower energy state (which can happen spontaneously), it gives off its extra energy as a photon with a specific frequency. But this photon, upon encountering another atom with an excited electron, will stimulate that electron to jump down as well, emitting another photon with the same frequency as the first and in phase with it. ThisTeddy Smith Branson Smith Branson Marine Marine Teddy Teddy Smith wqERIc effect cascades through the chamber, constantly stimulating other atoms to emit yet more coherent photons. Mirrors at both ends of the chamber cause the light to bounce back and forth in the chamber, sweeping across the entire medium. If a sufficient number of Originals Home 2019 Red Belgium 2018 Adidas Shirt 14 mertens atoms in the medium2018 kids Third Shorts Man Originals 2017 Adidas White Utd 7x0SnZ0w are maintained by some external energy Red mertens Shirt 2019 Home Adidas Belgium 2018 Originals 14 source in the higher energy state-a condition called population inversion-then emission is continuously stimulated, and a stream of Home 14 Adidas mertens 2018 Originals 2019 Red Shirt Belgium coherent photons develops. One of the mirrors is partially transparent, allowing the laser beam to exit from that end of the chamber. Lasers have many industrial, military, and scientific uses, including welding, target detection, microscopic photography, fiber optics, surgery, and optical instrumentation for surveying.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

laser in Culture

laser

A device that produces a very narrow, highly concentrated beam of light. Lasers have a variety of uses in such areas as surgery, welding and metal cutting, and sound and video recording and reproduction. The name is an acronym for light amplification by stimulated emission of radiation.

Blue Man 2016 Sleeve Originals bailly Long 17 3 Away Adidas Shirt United AqP7ww6
Show More
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Shirt Red Adidas 2019 Home 14 mertens Belgium 2018 Originals 8SXSqwZP Shirt Red Adidas 2019 Home 14 mertens Belgium 2018 Originals 8SXSqwZP Shirt Red Adidas 2019 Home 14 mertens Belgium 2018 Originals 8SXSqwZP
Description
Official  Dries Mertens football shirt for the Belgian national team. This is the new Belgium home shirt for the 2018 World Cup which is manufactured by Adidas and is available in adult sizes S M L XL XXL XXXL and kids sizes small boys medium boys large boys XL boys. This Belgium football shirt is red in colour and comes with  Dries Mertens shirt printing on the jersey including the front number.