laser


laser
n.
a device that produces a very thin beam of light in which high energies are concentrated (the word derives from light amplification by stimulated emission of radiation). In surgery, lasers can be used to operate on small areas of abnormality without damaging delicate surrounding tissue. For example, lasers are used to unblock coronary arteries narrowed by atheroma and to remove certain types of birthmark (see naevus). Different types of laser are used in eye surgery for operations on the cornea, lens capsule, and retina (see argon laser, diode laser, excimer laser, YAG laser). Lasers are also used in the treatment of cervical intraepithelial neoplasia, varicose veins (endovenous laser treatment), and in a specialized form (the Nd:YAG laser) for endometrial ablation.

The new mediacal dictionary. 2014.

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  • LASER — Pour les articles homonymes, voir Laser (homonymie). Rayon laser à travers un dispositif optique …   Wikipédia en Français

  • Laser TV — is a new video display technology using laser optoelectronics.HistoryProposed as long ago as 1966 [cite web url=http://www.insightmedia.info/reportinfo.php?2006laser title=2006 Laser Projection Systems Report publisher=… …   Wikipedia

  • laser — [ lazɛr ] n. m. • 1960; mot angl., acronyme de Light Amplification by Stimulated Emission of Radiation ♦ Phys. Générateur d ondes électromagnétiques (du proche infrarouge aux rayons X) fonctionnant sur le principe de l émission stimulée (pompage… …   Encyclopédie Universelle

  • Laser-TV — ist eine neue Fernsehtechnik, die 1963 − bald nach der Erfindung des Lasers – vorgeschlagen und in den 1990ern als Prototyp entwickelt wurde. Anfang des 21. Jahrhunderts hat das System Laser TV Marktreife erlangt und im Jahr 2008 wurde erstmals… …   Deutsch Wikipedia

  • láser — sustantivo masculino 1. Dispositivo electrónico que produce un haz de luz monocromático y coherente de mucha potencia: rayo láser, láser de gas carbónico. Los aparatos de láser son utilizados como soldadores industriales en telecomunicaciones, en …   Diccionario Salamanca de la Lengua Española

  • laser — LÁSER, lasere, s.n. Dispozitiv pentru amplificarea sau generarea undelor electromagnetice din domeniul optic pe baza efectului de emisiune forţată a sistemelor atomice, care permite o concentrare de energie corespunzătoare unei temperaturi de… …   Dicționar Român

  • Laser — Sm gebündeltes Licht erw. fach. (20. Jh.) Entlehnung. Entlehnt aus ne. laser, einem Akronym aus den Anfangsbuchstaben von ne. light amplification (by) stimulated emission (of) radiation Lichtverstärkung durch Strahlungsanregung .    Ebenso nndl.… …   Etymologisches Wörterbuch der deutschen sprache

  • laser — UK US /ˈleɪzər/ noun [C] ► a device that produces a powerful narrow beam of light that can be used as a tool, for example to cut metal, to perform medical operations, etc. The beam of light is also known as a laser: »It shines a laser beam on to… …   Financial and business terms

  • láser — m. instrum. Instrumento óptico que utiliza haces de luz en fase con el que se puede vaporizar o coagular pequeñas estructuras; se aplica en cirugía plástica, fotocoagulación de la retina, dermatología y destrucción de placas de ateroma, entre… …   Diccionario médico

  • LASER — in condimentis Vett. multi usûs. Apicii Excerpta, In brevi pigmentorum, quoe in domo esse dehent, ut condimentis nihil desit, recensentur crocum, piper, zingiber, lasar, solium, bacca murtoe, costum, caryophyllum. Et paulo infra, de siccis hoc… …   Hofmann J. Lexicon universale

  • láser — (Del ingl. laser, acrón. de light amplification by stimulated emission of radiation, amplificación de luz mediante emisión inducida de radiación). 1. m. Dispositivo electrónico que, basado en la emisión inducida, amplifica de manera… …   Diccionario de la lengua española