Definitions for Laser
ˈleɪ zərLas·er

Princeton's WordNet(4.50 / 2 votes)Rate this definition:

1. laser, optical maser(noun)

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

Freebase(3.00 / 7 votes)Rate this definition:

1. Laser

   A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation. Lasers differ from other sources of light because they emit light coherently. Its spatial coherence allows a laser to be focused to a tight spot, and this enables applications like laser cutting and laser lithography. Its spatial coherence also keeps a laser beam collimated over long distances, and this enables laser pointers to work. Laser also have high temporal coherence which allows them to have a very narrow spectrum, i.e., they only emit a single color of light. Their temporal coherence also allows them to emit pulses of light that only last a femtosecond. Lasers have many important applications. They are used in common consumer devices such as DVD players, laser printers, and barcode scanners. They are used in medicine for laser surgery and various skin treatments, and in industry for cutting and welding materials. They are used in military and law enforcement devices for marking targets and measuring range and speed. Laser lighting displays use laser light as an entertainment medium. Lasers also have many important applications in scientific research.

Chambers 20th Century Dictionary(3.00 / 2 votes)Rate this definition:

1. Laser

   lā′ser, n. a gum-resin from North Africa, esteemed by the ancients as a deobstruent and diuretic. [L. laser, juice of laserpitium.]

British National Corpus

1. Nouns Frequency

   Rank popularity for the word 'Laser' in Nouns Frequency: #2593

Anagrams for Laser »

1. Earls

2. Lares

3. Rales

4. Reals

How to pronounce Laser?

1. 

   Alex

   US English

   

   Daniel

   British

   

   Karen

   Australian

   

   Veena

   Indian

How to say Laser in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Laser in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of Laser in Pythagorean Numerology is: 1

Examples of Laser in a Sentence

1. Professor Karsten Koenig:

   We use femtosecond laser pulses. We scan the skin and we get signals from the skin, particularly fluorescence, as well as another signal called second harmonic generation. So with these two signals we can build up images and get a precise look into the skin with a high resolution. The resolution is a factor of one thousand (times) better than ultrasound. So now you get the information without taking biopsies; normally you slice them, you stain them, and then a pathologist would look through these sections. Now you can get this information in seconds, labor free and with this fantastic resolution.

2. Benjamin Cyr:

   If you have a laser that can shine through windows and across long distances — without even alerting anyone in the house that you're hitting the smart speaker — there's a big threat in being able to do things a smart speaker can do without permission of the owner.

3. Cincinnati Zoo:

   Kimba began intermittent bouts of lameness last summer, which we've been managing with laser therapy and medications that mitigate symptoms.

4. Gary Stromberg:

   Bondholders have a laser-focus on covenants.

5. Cassidy Geoghegan:

   In Dallas, gun violence survivors, students and activists are laser-focused on harnessing the momentum from the recent March for Our Lives events to push for gun safety and create lasting policy reform.

Images & Illustrations of Laser

Popularity rank by frequency of use