of or relating to a function or functions: functional difficulties in the administration.
capable of operating or functioning: When will the ventilating system be functional again?
having or serving a utilitarian purpose; capable of serving the purpose for which it was designed: functional architecture; a chair that is functional as well as decorative.
Also func·tion·al·is·tic.(of a building or furnishing) constructed or made according to the principles of functionalism or primarily as a direct fulfillment of a material need.
Medicine/Medical. without a known organic cause or structural change: a functional disorder.Compare organic(def 5).
pertaining to an algebraic operation: a functional symbol.
Linguistics. (of linguistic analysis, language teaching, etc.) concerned with the communicative role of language rather than, in addition to, or as the framework for its formal structure.
noun
Mathematics. a function that has a domain whose elements are functions, sets, or the like, and that assumes numerical values.
of, involving, or containing a function or functions
practical rather than decorative; utilitarianfunctional architecture
capable of functioning; working
medaffecting a function of an organ without structural change
psychol
relating to the purpose or context of a behaviour
denoting a psychosis such as schizophrenia assumed not to have a direct organic cause, like deterioration or poisoning of the brainCompare organic psychosis
noun
mathsa function whose domain is a set of functions and whose range is a set of functions or a set of numbers
