Functional

[fuhngk-shuh-nl] /ˈfʌŋk ʃə nl/

adjective
1.
of or relating to a or :
functional difficulties in the administration.
2.
capable of operating or :
When will the ventilating system be functional again?
3.
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.
4.
Also, functionalistic. (of a building or furnishing) constructed or made according to the principles of or primarily as a direct fulfillment of a material need.
5.
Medicine/Medical. without a known organic cause or structural change:
a functional disorder.
Compare (def 5).
6.
pertaining to an algebraic operation:
a functional symbol.
7.
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
8.
Mathematics. a that has a domain whose elements are , sets, or the like, and that assumes numerical values.
/ˈfʌŋkʃənəl/
adjective
1.
of, involving, or containing a function or functions
2.
practical rather than decorative; utilitarian: functional architecture
3.
capable of functioning; working
4.
(med) affecting a function of an organ without structural change
5.
(psychol)

noun
6.
(maths) a function whose domain is a set of functions and whose range is a set of functions or a set of numbers
adj.

1630s; as a term in architecture, “utilitarian,” 1928; see function (n.) + -al (1). Related: Functionally; functionality.

functional func·tion·al (fŭngk’shə-nəl)
adj.

functional
(fŭngk’shə-nəl)
Affecting bodily functions but not organic structure, as a disorder such as irritable bowel syndrome. Compare organic.

1. Working correctly.
2. Pertaining to functional programming.
3. higher-order function.