Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of or relating to a function.
  • adjective Of, relating to, or indicating a mathematical function or functions.
  • adjective Designed for or adapted to a particular function or use.
  • adjective Capable of performing a function; operative.
  • adjective Able to function personally or socially despite limitations or impairment.
  • adjective Medicine Involving physiological function rather than anatomical structure.
  • noun A linear function on vectors whose values are scalars.

from The Century Dictionary.

  • Pertaining to functions; relating to some office or function.
  • Pertaining to an algebraical operation: as, a functional symbol.
  • Having the function usual to the part or organ: as, functional wings of an insect (that is, those used for flying).

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Pertaining to, or connected with, a function or duty; official.
  • adjective (Pathology, Physiol.) Pertaining to the function of an organ or part, or to the functions in general; involving or affecting function rather than physiology. See functional disease, below.
  • adjective Designed for or capable of a particular function or use.
  • adjective Fit or ready for use or service; useable; in working order. Antonym of out of order and nonfunctional.
  • adjective Designed to emphasize practical utility rather than artistic or aesthetic purposes.
  • adjective (Med.) a disease of which the symptoms cannot be referred to any appreciable lesion or change of structure; the derangement of an organ arising from a cause, often unknown, external to itself opposed to organic disease, in which the organ itself is affected.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective In good working order.
  • adjective Useful; serving a purpose, fulfilling a function
  • adjective Only for functional purposes, notably in architecture
  • adjective computing theory Having semantics defined purely in terms of mathematical functions, without side-effects.
  • adjective medicine Of a disease, such that its symptoms cannot be referred to any appreciable lesion or change of structure; opposed to organic disease, in which the organ itself is affected.
  • noun mathematics 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.
  • noun mathematics (functional analysis) A scalar-valued linear function on a vector space
  • noun computing An object encapsulating a function pointer (or equivalent).

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective (of e.g. a machine) performing or capable of performing
  • adjective fit or ready for use or service
  • adjective designed for or adapted to a function or use
  • adjective involving or affecting function rather than physiology
  • adjective designed for or capable of a particular function or use
  • adjective relating to or based on function especially as opposed to structure

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

function +‎ -al

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Examples

  • "You've probably heard of the term functional MRI," she said.

    Breaking News: CBS News 2011

  • In this paper, the term functional ingredients refers to substances purported to improve bodily functioning that are added to traditional foods through a manufacturing or other process.

    Center on Budget: Comprehensive News Feed 2010

  • It is important here that I clarify how I am using the term functional in this context.

    MachineMachine (formerly 'The Huge Entity') 2010

  • You probably noticed that the term functional programming has appeared in many areas recently - the C# 3.0 and LINQ have been largely influenced by this paradigm and many of the libraries that enable and simplify writing parallel code rely on functional ideas.

    The Code Project Latest Articles 2009

  • The first time I heard the term functional construction was when I was writing the LINQ to XML section of my book LINQ Unleashed: for C# from Sams.

    Developer.com 2009

  • The first time I heard the term functional construction was when I was writing the LINQ to XML section of my book LINQ Unleashed: for C# from Sams.

    Developer.com 2009

  • The first time I heard the term functional construction was when I was writing the LINQ to XML section of my book LINQ Unleashed: for C# from Sams.

    Developer.com 2009

  • The first time I heard the term functional construction was when I was writing the LINQ to XML section of my book LINQ Unleashed: for C# from Sams.

    Developer.com 2009

  • Although the term functional might in your mind be somewhat a limiting factor, the good thing about F# is that it supports object-oriented constructs, and also has full access to the.

    unknown title 2008

  • Although the term functional might in your mind be somewhat a limiting factor, the good thing about F# is that it supports object-oriented constructs, and also has full access to the.

    unknown title 2008

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