Definition of coherent in English:

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Pronunciation: /ˌkōˈhirənt/


1(Of an argument, theory, or policy) logical and consistent: they failed to develop a coherent economic strategy
More example sentences
  • I fail to see how that provides a logical, coherent argument for the increase.
  • Today the politics of these countries become more and more populist: appeals to public opinion rather than to reasoned concepts of coherent policy.
  • Neither plaintiff can articulate any coherent argument, and the case ought to have been tossed out in an instant.
1.1(Of a person) able to speak clearly and logically: she was lucid and coherent and did not appear to be injured
More example sentences
  • A military source at Central Command said: ‘She was coherent and was able to give her rescuers the thumbs up.’
  • By then, he was coherent enough to be able to listen to the twin's conversation.
  • When she does catch what we are talking about she is very coherent and has intelligent comments to make.
2United as or forming a whole: divided into a number of geographically coherent kingdoms
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  • Here we have a coherent body of knowledge, which Lyndon LaRouche has developed.
  • Think security and the idea of assembling a coherent body of knowledge on a terrorist organisation.
  • The prize will honor a visually compelling, coherent body of work that bears witness and has integrity of purpose.
3 Physics (Of waves) having a constant phase relationship.
Example sentences
  • There are of course lasers with wavelengths in the infrared, masers that emit coherent microwaves, and even x-ray lasers.
  • In other words, the phase of the coherent matter wave is well defined but the number of atoms fluctuates from site to site.
  • A laser is the generator of intense coherent, electromagnetic radiation in the spectral range between ultra violet and infrared wavelengths.


Mid 16th century (in the sense 'logically related to'): from Latin cohaerent- 'sticking together', from the verb cohaerere (see cohere).

Words that rhyme with coherent

adherent, sederunt
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