AskDefine | Define functional

Dictionary Definition

functional adj
1 designed for or capable of a particular function or use; "a style of writing in which every word is functional"; "functional architecture" [ant: nonfunctional]
2 involving or affecting function rather than physiology; "functional deafness" [ant: organic]
3 relating to or based on function especially as opposed to structure; "the problem now is not a constitutional one; it is a functional one"; "delegates elected on a functional rather than a geographical basis"
4 fit or ready for use or service; "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order" [syn: usable, useable, in working order(p), operable, operational]
5 designed for or adapted to a function or use; "functional education selects knowledge that is concrete and usable rather than abstract and theoretical"; "functional architecture"
6 (of e.g. a machine) performing or capable of performing; "in running (or working) order"; "a functional set of brakes" [syn: running(a), operative, working(a)]

User Contributed Dictionary




  1. In good working order.
  2. Useful; serving a purpose
    That sculpture is not merely artistic, but also functional. It can be used as a hatrack.
  3. Having semantics defined purely in terms of mathematical functions, without side-effects.


in good working order
useful, serving a purpose
  • Finnish: käytännöllinen
  • German: funktional, Funktions-, funktionell, Gebrauchs-, zweckmäßig
  • Italian: funzionale
  • Japanese: (, benrina)
  • Portuguese: funcional
  • Russian: функциональный (funkcionál'nyj)
  • Swedish: funktionell
Having semantics defined purely in terms of mathematical functions, without side-effects


  1. A function that takes a function as its argument; More precisely: A function y=f(x) whose argument x varies in a space of (real valued, complex valued) functions and whose value belongs to a monodimensional space. An example: the definite integration of integrable real functions in a real interval.


Extensive Definition

Generally, functional refers to something able to fulfill its purpose or function.

Synonyms, Antonyms and Related Words

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