- 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.
- (of a building or furnishing) constructed or made according to the principles of functionalism or primarily as a direct fulfillment of a material need.
- without a known organic cause or structural change: a functional disorder.
- pertaining to an algebraic operation: a functional symbol.
- (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.
- 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; utilitarian
- capable of functioning; working
- affecting 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 brain
- a function whose domain is a set of functions and whose range is a set of functions or a set of numbers
