laser

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laser

la·ser

 (lā′zər)
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.

[l(ight) a(mplification by) s(timulated) e(mission of) r(adiation).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

laser

(ˈleɪzə)
n
1. (General Physics) 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. (General Physics) any similar source producing a beam of any electromagnetic radiation, such as infrared or microwave radiation
vb (tr)
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
[C20: from light amplification by stimulated emission of radiation]

Laser

(ˈleɪzə)
n
trademark a type of dinghy, designed to be sailed by one person
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

la•ser

(ˈleɪ zər)

n.
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.
Compare maser.
[1955–60; l(ightwave) a(mplification by) s(timulated) e(mission of) r(adiation)]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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la·ser

(lā′zər)
A device that emits a very narrow and intense beam of light or other radiation. The light is generated by exciting the atoms of a medium, such as a crystal, gas, or liquid. The color of laser light depends on the level to which the atoms of the medium become excited. Lasers are used for many purposes, such as cutting hard substances and destroying diseased tissue.
Did You Know? A laser emits a thin, intense beam of light that can travel long distances without diffusing or spreading out very much. Almost any light beam consists of many waves traveling in roughly the same direction. In laser light, the waves are all precisely in step with each other. Such light is called coherent. Lasers produce coherent light through a process called stimulated emission. The laser contains a chamber in which atoms of a medium such as a synthetic ruby rod or a gas are excited to a high energy level. When a light wave of the correct frequency is sent through the chamber from an electronic flash tube, it makes the excited atoms emit light that is in step with the original wave. These waves then stimulate other atoms to emit more coherent light. The chamber has mirrors at both ends, so the light travels back and forth, repeatedly stimulating emission. One of the mirrors is partially transparent so that the laser beam can exit from that end.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

laser

Any device that can produce or amplify optical radiation primarily by the process of controlled stimulated emission. A laser may emit electromagnetic radiation from the ultraviolet portion of the spectrum through the infrared portion. Also, an acronym for "light amplification by stimulated emission of radiation."
Dictionary of Military and Associated Terms. US Department of Defense 2005.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.laser - an acronym for light amplification by stimulated emission of radiationlaser - an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light
optical device - a device for producing or controlling light
photocoagulator - surgical instrument containing a laser for use in photocoagulation
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
أشِعَّة ليزرلِيّزَرْ
laserlaserový
laserlaser-
laser
laser
lézer
leysigeislileysirleysir, leysigeisli
レーザー
레이저
lazerinis spausdintuvaslazeris
lāzera-lāzers
laser
laserlaserový
laser
laser
แสงเลเซอร์
la-delaser

laser

[ˈleɪzəʳ]
A. Nláser m
B. CPD laser beam Nrayo m láser
laser gun Npistola f de rayos láser
laser printer Nimpresora f láser
laser surgery Ncirujía f con láser
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

laser

[ˈleɪzər]
nlaser m
modif [technology] → laser inv; [surgery, treatment] → laser inv laser lightlaser beam nrayon m laserlaser disc laser disk ndisque m laserlaser disc player nplatine f laserlaser light nlumière f laserlaser printer nimprimante f laserlaser show nspectacle m laser
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

laser

nLaser m; (Comput: = printer) → Laserdrucker m

laser

in cpdsLaser-;
laser beam
nLaserstrahl m
laser disc
nLaserdisc f, → Laserdisk f
laser gun
nLaserkanone for -pistole f
laser medicine
nLasermedizin f
laser printer
nLaserdrucker m
laser show
nLasershow f
laser surgery
laser technology
nLasertechnik f
laser weapon
nLaserwaffe f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

laser

[ˈleɪzəʳ] nlaser m inv
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

laser

(ˈleizə) 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.
ˈlaser printer noun
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.

laser

لِيّزَرْ laser laser Laser λέιζερ láser laser laser laser laser レーザー 레이저 laser laser laser laser лазер laser แสงเลเซอร์ lazer laser 激光
Multilingual Translator © HarperCollins Publishers 2009

la·ser

n. laser.
1. sigla del inglés “Light Amplification by Stimulated Emission of Radiation” (amplificación de la luz por estimulación de emisión de radiación);
2. bisturí microquirúrgico usado en la cauterización de tumores.
English-Spanish Medical Dictionary © Farlex 2012

laser

n láser m
English-Spanish/Spanish-English Medical Dictionary Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.
References in periodicals archive ?
"[Thus far,] the best evidence exists for the safety of the carbon dioxide laser, particularly in the treatment of condyloma," they said.
Treatment of epulis fissuratum with carbon dioxide laser. Braz Dent J 2011; 23(1):77-81.
Carbon dioxide laser was considered by some authors as the gold standard in ablative lasers with its wavelength which is selectively absorbed by water.3 Since approximately 77% of skin consists of water, this absorption was the optimal condition for the ablation effect.1,3 CO2 laser in the continuous mode is effective but associated with considerable possibility of texture changes and post-therapeutic skin color alterations because of its uncontrollable penetration depth.
The Beacon Laser System provides the versatility of two distinct methods of tissue-sparing carbon dioxide laser delivery to accommodate multiple surgical specialties.
As late as 1987, the USSR tried and failed to launch the unmanned Polyus spacecraft that was equipped with a carbon dioxide laser and designed to destroy America's anti-missile Strategic Defence Initiative satellites.
Many treatments, such as cryotherapy, retinoic acid ointment, and carbon dioxide laser treatment, exerted no significant effect on PK.
One study employed an 870/930 nm dual band system [25] and another investigated the use of an ablative carbon dioxide laser as a means to fractionate nails to enhance the penetration of topical anti-fungal agents [32].
Similarly, the proportion of study participants who received at least one type of treatment (propranolol, oral steroids, pulsed dye laser, surgery, topical timolol, intralesional corticosteroids, yttrium-aluminum-garnet laser, carbon dioxide laser, or fraxel laser) was markedly higher (80%) than that reported previously by the Hemangioma Investigator Group for all body sites (38%).
Similarly, the proportion of study participants who received at least one type of treatment (propranolol, oral steroids, pulsed-dye laser, surgery, topical timolol, intralesional corticosteroids, yttrium-aluminum-garnet laser, carbon dioxide laser, or fraxel laser) was markedly higher (80%) than that reported previously by the Hemangioma Investigator Group for all body sites (38%).
Among the topics are an evaluation of the effects of bleach products and fabric softener on properties of a common flame-resistant cotton-nylon fabric, an advanced layering system and design for increasing the thermal protection of wildland fire shelters, the high-intensity thermal testing of protective fabrics with a carbon dioxide laser, the development and validation of an alternative chemical permeation test cell, and round-robin testing of European-weight firefighting clothing with fire engulfment instrumented mannequins.
Evaluation of a technique using the carbon dioxide laser for the treatment of aural hematoma.
Kokabee repeatedly refused the offers, including a request for help developing a high-powered carbon dioxide laser used for isotope separation and a promise for a full scholarship for his doctoral program in exchange for his services.

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