Definition of laser in English:

laser

noun

  • A device that generates an intense beam of coherent monochromatic light (or other electromagnetic radiation) by stimulated emission of photons from excited atoms or molecules. Lasers are used in drilling and cutting, alignment and guidance, and in surgery; the optical properties are exploited in holography, reading bar codes, and in recording and playing compact discs.

    • ‘Microsurgery and keyhole surgery are common place now - as is the use of lasers in surgery.’
    • ‘This lattice can trap the neutral atoms in potential wells because the electric fields of the lasers induce a dipole moment in the atom.’
    • ‘It has led to computers, lasers and nuclear reactors, and it tells us why the Sun shines and why the ground beneath our feet is solid.’
    • ‘I looked at the base and saw stands with lasers on them and the oversized slugs with beam cannons.’
    • ‘The lasers talk to the computer, which moves a blocking device to intercept the puck.’
    • ‘It is this property that lies behind the technological device of the laser.’
    • ‘This pattern creates a hologram that you can see by illuminating the plate with a laser.’
    • ‘The coating absorbs some of the laser's light, a percentage of which is made into a photocurrent.’
    • ‘I had to look at the red light of the laser and it was like being on hallucinogenic drugs.’
    • ‘This spurred him to work on lasers, a necessary piece of equipment for his measurement.’
    • ‘However, an increasing number of archaeologists are adopting lasers as efficient measuring devices.’
    • ‘Other possibilities include the use of lasers and strobe lights which temporarily blind or confuse a suspect.’
    • ‘A few were beaming their lasers at him, changing him until he could no longer walk or move.’
    • ‘It passes through the beam splitter the way it came, and goes straight back into the laser.’
    • ‘The final piece is shown in a light box, with holes created by lasers letting light shine through layers of coloured plastics.’
    • ‘A laser is a beam of light radiation, which delivers intense energy to a specific area of skin.’
    • ‘Yet it was not so long ago that lasers were deemed a solution in search of a problem.’
    • ‘The structure has potential for the development of active optical devices such as lasers and passive components.’
    • ‘Powered by infrared lasers, the shiny surface reflects and focuses this laser beam into a ring.’
    • ‘When lasers and optical fibres came together they revolutionised communications.’

verb

[WITH OBJECT]
  • Treat or remove (something) using a laser, especially as part of surgery.

    ‘he has had tattoos lasered off his chest’
    ‘I've got to get my eyes lasered again’
    • ‘The surgery involves lifting a small flap of corneal tissue and lasering onto the deeper cornea beneath.’
    • ‘It was a small matter of lasering away the areas of bad cells that had been pinpointed.’
    • ‘I fully intend to have my face lasered soon.’
    • ‘This isn't a tattoo you can have lasered off.’
    • ‘If you feel like getting hair lasered off, this is the place for you.’
    • ‘What is the recovery time after having a tattoo lasered off?’
    • ‘Having your eyes lasered "is just like any surgery, and that means there will be risks".’
    • ‘Every few years, my test results would require freezing, or burning, or lasering mutating pre-cancerous cells away.’
    • ‘Has lasering the lines from his face really improved him?’
    • ‘While he was lasering, he remarked the patient had started bleeding.’

Origin

1960s: acronym from light amplification by stimulated emission of radiation, on the pattern of maser.

Pronunciation

laser

/ˈlāzər//ˈleɪzər/