Definition of coherent in English:


Line breaks: co|her¦ent
Pronunciation: /kə(ʊ)ˈhɪər(ə)nt


  • 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.
    logical, reasoned, reasonable, well reasoned, rational, sound, cogent; consistent, well organized, systematic, orderly, methodical; clear, lucid, articulate, relevant, intelligible, comprehensible
    informal joined-up
  • 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.
  • 2Forming a unified whole: the arts could be systematized into one coherent body of knowledge
    More example sentences
    • 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.
    More 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.



More example sentences
  • For the most part, they spoke coherently and cogently about their organisation.
  • The author's argument is persuasive, as well as clearly and coherently presented.
  • Most decision making bureaucrats cannot write a single straight sentence or argue a point coherently.


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

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