Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “laser”

laser

noun [C]
 
 
/ˈleɪzər/
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 the surface of the disc to read the pattern of the bumps. Our team are engaged in the research of laser technology. They now use a laser gun for reading barcodes.
(Definition of laser from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of laser?
Add Cambridge dictionaries to your browser to your website

Definitions of “laser” in other dictionaries

Word of the Day

look on the bright side

to find good things in a bad situation

Word of the Day

The language of work

by Kate Woodford,
October 15, 2014
Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More