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lasing

[ley-zing]
noun Optics.
  1. the generation of coherent light by a laser.
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Origin of lasing

lase

[leyz]
verb (used without object), lased, las·ing. Optics.
  1. to give off coherent light, as in a laser.
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Origin of lase

First recorded in 1960–65; back formation from laser
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for lasing

lase

verb
  1. (intr) (of a substance, such as carbon dioxide or ruby) to be capable of acting as a laser
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

lasing in Medicine

lase

(lāz)
v.
  1. To cut, divide, or dissolve a substance with a laser.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.