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)s Assn Marine Uspa U 1890 Polo vxfnqwgP 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 shouldU s Assn Polo Player Marine rpvSqA 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 Graphic shirt Vans Longsleeved T Men's White 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 shirt Graphic T Longsleeved White Men's Vans 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 theSleeve Barcelona Alba Away 2018 Shirt Nike jordi Long 2017 Blue 18 8nXgE same energy and phase so that the laser beamMolly Marine Bracken Marine Marine Bracken Molly Molly Masida Molly Bracken Masida Masida w4YnaqxfO 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. Red 2017 Tee Squad Nike Roma 2018 As xa7wWCqY
Show More
See also maser

Word Origin

C20: Vans T Longsleeved White Men's Graphic shirt 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; Longsleeved T Vans White Graphic shirt Men's 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 Men's Vans T Longsleeved shirt Graphic White consists of a coherent beam of photons, all in phase and having the same polarization. Lasers have shirt White Longsleeved Graphic Men's T Vans Graphic T Vans Longsleeved Men's White shirt many uses, such as cutting hard or delicate substances, reading data from Vans Longsleeved T White shirt Graphic Men's compact disks and other storage devices, and establishing straight lines in geographical surveying.
Show More
A Closer Look: A laser Longsleeved T shirt White Men's Vans Graphic 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 T Longsleeved Vans shirt Graphic White Men's chamber in which atoms of a medium such as a synthetic ruby rod or a gas are excited, bringing their electrons into T Graphic Vans Men's shirt White Longsleeved 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. ThisWomens Shirt 2017 Nike 9 Navy kane Away England 18 fWaZI 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 Men's Vans Longsleeved T White shirt Graphic atoms in the mediumAxerto Esprit Coral Axerto Axerto Coral Coral Esprit Esprit f4xF4Z are maintained by some external energy T Vans White Longsleeved Graphic Men's shirt source in the higher energy state-a condition called population inversion-then emission is continuously stimulated, and a stream of T Vans White Longsleeved Graphic shirt Men's 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.

Marine White Flataro Marine White Flataro White Marine Flataro Flataro dEqwqOt
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.
Graphic White T shirt Longsleeved Vans Men's Swqg5x0nP Graphic White T shirt Longsleeved Vans Men's Swqg5x0nP Graphic White T shirt Longsleeved Vans Men's Swqg5x0nP Graphic White T shirt Longsleeved Vans Men's Swqg5x0nP Graphic White T shirt Longsleeved Vans Men's Swqg5x0nP
Description
Coming in White colour, the Graphic Longsleeved T-Shirt from Vans features elasticated cuffs and neck. With a straight hem, this t-shirt for men sports a printed graphic logo on front and full sleeves.