Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun 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.
  • noun A beam of radiation emitted by a laser.
  • noun Sports A ball or puck sent in a straight line at high speed.

from The Century Dictionary.

  • noun An obsolete form of leisure.
  • noun A gum-resin obtained from the north of Africa, and greatly esteemed by the ancients as an antispasmodic, deobstruent, and diuretic. It is supposed to have been produced by Thapsia Garganica or one of the varieties of that plant. Also called asadulcis.

from the GNU version of the Collaborative International Dictionary of English.

  • noun A device which produces an intense, usually narrow, monochromatic beam of coherent light; called also optical maser. It has various forms, and is used in various applications in science and technology. The beam is produced by boosting the majority of the electrons in specific radiation-absorbing atoms in a medium into a higher energy level, from which they are stimulated by their own emitted radiation to drop back synchronously to their lower energy level, and emit light which is in phase (coherent).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A gum resin obtained from certain umbelliferous plants.
  • noun Such a plant.
  • noun A device that produces a monochromatic, coherent beam of light.
  • verb To cut with a laser
  • verb sports To throw with laser-like precision

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

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

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[l(ight) a(mplification by) s(timulated) e(mission of) r(adiation).]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin

from Wiktionary, Creative Commons Attribution/Share-Alike License

Acronym of Light Amplification by the Stimulated Emission of Radiation. Originally called an optical maser.

Examples

  • Each ball bearing had his name laser etched on it.

    Gideon’s war

  • Each ball bearing had his name laser etched on it.

    Gideon’s war

  • Each ball bearing had his name laser etched on it.

    Gideon’s war

  • Each ball bearing had his name laser etched on it.

    Gideon’s war

  • The term laser radar is also in use but is misleading because it uses laser light and not the radiowaves that are the basis of conventional radar

    Next Big Future

  • The term laser radar is also in use but is misleading because it uses laser light and not the radiowaves that are the basis of conventional radar

    Next Big Future

  • The term laser radar is also in use but is misleading because it uses laser light and not the radiowaves that are the basis of conventional radar

    Next Big Future

  • Nov. 9, 1957: Columbia grad student Gordon Gould writes in his notebook calculations for what he calls a laser Light Amplification by Stimulated Emission of Radiation.

    Don't Point That Thing

  • On this day in 1957, Gordon Gould began to write down the principles of what he called a laser in his notebook during a sleepless Saturday night.

    The Origin of the Laser & Why Super-Villians Are Born

  • On this day in 1957, Gordon Gould began to write down the principles of what he called a laser in his notebook during a sleepless Saturday night.

    Archive 2007-11-01

Comments

New comments are temporarily disabled while we update our database.

  • Light Amplification by Stimulated Emission of Radiation

    February 28, 2007

  • I don't understand this use of laser:

    "The property has been lasered with recycle dam and pump, plus central laneway, elec fencing and troughs in all the paddocks, Cattle yards with crush plus ramp, 4 Bay Machinery shed with power and cement floor, disused dairy, tackle room plus Hay Shed and other Machinery shed."

    - real estate ad.

    May 14, 2009