Definition of functional in English:


Syllabification: func·tion·al
Pronunciation: /ˈfəNGkSHənl


  • 1Of or having a special activity, purpose, or task; relating to the way in which something works or operates: there are important functional differences between left and right brain
  • 1.1Designed to be practical and useful, rather than attractive: she had assumed the apartment would be functional and simple
    More example sentences
    • Once again, Pearl Izumi has designed a functional and attractive article of clothing that is not only great on the bike but in other uses as well.
    • That is, sites that are attractive, practical, functional, and interesting.
    • It's an attractive and functional design and a excellent exemplar of public art.
    practical, useful, utilitarian, utility, workaday, serviceable; minimalist, plain, simple, basic, modest, unadorned, unostentatious, no-frills, without frills; impersonal, characterless, soulless, institutional, clinical
  • 1.2Working or operating: the museum will be fully functional from the opening of the festival
    More example sentences
    • Perhaps the most interesting aspect is the contrast between this flamboyant style and some of the more functional, if effective, tactics employed by Europe's top sides.
    • In fact, an attack may have no functional effect either - it may create directly an operational effect on the decisionmaker.
    • The Dolby Digital 2.0 track is uninspiring, but completely functional and effective for a dialogue-driven feature.
    working, in working order, functioning, in service, in use; going, running, operative, operating, in operation, in commission, in action
    informal up and running
  • 1.3(Of a disease) affecting the operation, rather than the structure, of an organ: functional diarrhea
    More example sentences
    • The challenge is to reliably sift out and satisfactorily reassure the 40% with functional disease without missing those with more serious pathology.
    • Malnutrition, typhus, tuberculosis, sepsis, and universal diarrhoea (probably functional rather than infective) were rife.
    • Patients with predominant epigastric pain without peptic ulcer disease or oesophagitis have functional dyspepsia.
  • 1.4(Of a mental illness) having no discernible organic cause: functional psychosis
    More example sentences
    • The cases have been described as either a ‘toxic psychosis’ or a functional psychosis.
    • This discussion focuses on the acute treatment of functional psychosis.
    • The main differential diagnosis of delirium is from a functional psychosis (such as schizophrenia and manic depression) and from dementia.
  • 2 Mathematics Of or relating to a variable quantity whose value depends on one or more other variables.
    More example sentences
    • The author has succeeded in writing a book understandable to readers with very little knowledge of functional analysis and topological vector spaces.
    • He did publish a number of papers, however, which arose through the various courses such as algebraic topology, functional analysis, and geometry, which he taught.
    • How can we relate complex analysis, higher-dimensional geometry, functional analysis, and set theory to the forms of perception?



[sentence adverb]: functionally, the role of the library service is clearly educational
More example sentences
  • I will not ask the very obvious question but moving on, could you start by sharing with us your role, functionally.
  • Order parameters and their dynamics are always functionally defined in biological systems.
  • First, we reject his idea that units in anarchic international systems cannot be functionally differentiated.

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