\ˈlāz \
lased; lasing

Definition of lase 

intransitive verb

: to emit coherent light

Examples of lase in a Sentence

Recent Examples on the Web

The result is that the burnt and recovered material form their own wave that has a wavelength and frequency that corresponds to the difference between the two (or more) colors that lase. Chris Lee, Ars Technica, "Laser-powered cell phone transmitters could be in your future," 9 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'lase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of lase

1962, in the meaning defined above

History and Etymology for lase

back-formation from laser

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Time Traveler for lase

The first known use of lase was in 1962

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What made you want to look up lase? Please tell us where you read or heard it (including the quote, if possible).


evasion of direct action or statement

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